Joe Kauzlarich writes "In 2006, the on-line movie rental store Netflix proposed a $1 million prize to whomever could write a movie recommendation algorithm that offered a ten percent improvement over their own. As of this writing, the intriguingly-named Gravity and Dinosaurs team holds first place by a slim margin of .07 percent over BellKor, their algorithm an 8.82 percent improvement on the Netflix benchmark. So, the question remains, how do they write these so-called recommendation algorithms? A new O'Reilly book gives us a thorough introduction to the basics of this and similar lucrative sciences." Keep reading for the rest of Joe's review.

Don Wolf writes "Computer forensics is a rapidly growing discipline and an even faster growing business. Whether it's the natural progression of technological science pertaining to crime or perhaps the digression of a few elite information security professionals, computer forensics is every so slowly gaining credibility in the otherwise PhD dominated field of criminal science. Computer evidence continues to be showcased in some of the most high-profile and controversial court cases in history, from the murder case of Lasie Peterson to the multi-billion dollar Enron scandal. Whether society will allow it or not, computer forensics geeks will play pivotal roles in the prevalence of justice." Keep reading for the rest of Don's review.

Bennett Haselton is back with another piece on e-mail privacy. He starts "On April 14, 2007, I signed up for an AmeriTrade account using an e-mail address consisting of 16 random alphanumeric characters, which I never gave to anyone else. On May 15, I started receiving pump-and-dump stock spams sent to that e-mail address. I was hardly the first person to discover that this happens. Almost all of the top hits in a Google search for "ameritrade spam" are from people with the same story: they used a unique address for each service that they sign up with, so they could tell if any company ever leaked their address to a spammer, and the address they gave to AmeriTrade started getting stock spam. (I don't actually do that with most companies where I create accounts. But after hearing all the AmeriTrade stories, I created an account with them in April just for the purpose of entering a unique e-mail address and seeing if it would get leaked.)" Bennett continues on if you're willing to click the link.

Slashdot contributor Bennett Haselton writes "When Jimmy Wales recently announced the Search Wikia project, an attempt to build an open-source search engine around the user-driven model that gave birth to Wikipedia, he said his goal was to create "the search engine that changes everything", as he underscored in a February 5 talk at New York University. I think it could, although not for the same main reasons that Wales has put forth -- I think that for a search engine to be truly meritocratic would be more of a revolution than for a search engine to be open-source, although both would be large steps forward. Indeed, if a search engine could be built that really returned results in order of average desirability to users, and resisted efforts by companies to "game" the system (even if everyone knew precisely how the ranking algorithm worked), it's hard to overstate how much that would change things both for businesses and consumers. The key question is whether such an algorithm could be created that wouldn't be vulnerable to non-merit-based manipulation. Regardless of what algorithms may be currently under consideration by thinkers within the Wikia company, I want to argue logically for some necessary properties that such an algorithm should have in order to be effective. Because if their search engine becomes popular, they will face such huge efforts from companies trying to manipulate the search results, that it will make Wikipedia vandalism look like a cakewalk." The rest of his essay follows.

Scott Walters writes "Many of the recipes in SQL Hacks will improve the SQL you write day to day, and many will give you the confidence to attempt much more involved tasks with SQL. Other recipes will rarely if ever be needed, but make for a entertaining and education reading in a similar way that "worse case survival scenario" books do — SQL is pitted against the most difficult analysis tasks just as survival scenario books pit humans against pavement and lions. SQL Hacks fits well in the Hacks series, which raises the bar on advanced books by offering large, eclectic sets of tricks for problems that an unambitious person (a non-hacker) wouldn't ever push technology hard enough to run into. Put another way, the questions answered in a good Hacks book are ones that would get a "good question" comment rather than a an "RTFM!" response. It does a good job continuing where O'Reilly's SQL Cookbook left off, which is always difficult with two books written at slightly different times by different authors. Still, it's harder to review a Hacks book than a Learning book as, with hacks, the sky is the limit, and the reader will always find herself wishing for more. To this end, I hope O'Reilly continues to publish newer editions of their various Hacks books, drawing in more and more content in each edition, and identifying recipes that might better serve in the Cookbook counterpart." Read the rest of Scott's review.

Ravi writes "Fedora — the Linux that is developed as a community effort, is the sand box of Red Hat. They incorporate all the new features after they have been exhaustively tested into its commercial product, namely Red Hat Enterprise Linux . Fedora has a 6 month release schedule and the most recent release is core 6. In all respects Fedora is the same Red Hat Linux but with cutting edge packages. What I really like about Fedora apart from the vibrant community participating in its development is the mark of quality it has from its association with Red Hat." Read the rest of Ravi's review.

Tim Hunter writes "Hal Fulton's The Ruby Way, Second Edition doesn't try to be the only book a Ruby programmer needs. It tries to be a book every serious Ruby programmer needs, and it succeeds. The Ruby Way is a book about programming with Ruby, the object-oriented programming language from Japan. Ruby is free software and runs on Linux, Microsoft Windows, Apple OS X, and other operating systems. It is available for download from its web site, www.ruby-lang.org or its companion site www.rubyforge.org. Read the rest of Tim's review.

Ravi writes "Asynchronous Javascript And Xml, popularly known as Ajax, is a combination of Javascript, XML and some coding on the server side. Even though this technology existed for years, many believe it was Google which brought it to the front by implementing it on its sites and thus raising it to the cult status it enjoys now. There is something magical in seeing a website update its content without reloading the whole page, which is the visual essence of Ajax." Read the rest of Ravi's review.

Simon P. Chappell writes "We've all seen them, those icons that decorate blogs and websites; sometimes they're just little orange squares with white stripes, while others say RSS or Atom. Many of us have heard of feeds and podcasts and aggregators. What are these things and where did they come from? Well, Dave Johnson, the author of the open source Roller blogging software, is glad you asked and by way of an answer, he's written RSS and Atom in Action." Read the rest of Simon's review.

Michael J. Ross writes "The global accessibility of Web sites is a double-edged sword: At the same time that your online e-commerce site is open for business to anyone with an Internet connection, it is also open to malicious attack. Web sites based upon the popular language PHP, are no exception. Thus, it is both astonishing and worrisome that there are currently so few books devoted to PHP security — particularly ones that go beyond the handful of typical security countermeasures discussed in articles. Fortunately, Pro PHP Security, written by Chris Snyder and Michael Southwell, is intended to fill this critical need." Read the rest of Michael's review.

Aeonite writes "The Information Revolution subtitled, The Not-For-Dummies Guide to the History, Technology and Use of the World Wide Web, is the second in a trilogy by J.R. Okin. The first book, The Internet Revolution, covering the Internet in general and the third, The Technology Revolution being a guide to The Impact, Perils and Promise of the Internet. I have not read either of those two books, but I believe that each can be read independently, and this review should be viewed in that light." Read the rest of Aeonite's review.

Ben Rothke writes "PGP (Pretty Good Privacy), as most Slashdot readers know, is one of the most popular software encryption programs ever. It is so good and so effective that in the early 1990s the FBI launched a multi-year investigation against Phil Zimmerman, the creator of PGP, for possible violation of federal export laws, especially ITAR (International Traffic in Arms Regulation). After many years of investigation, the FBI ultimately dropped its case against Zimmerman. Even though PGP is synonymous with end-user encryption, there have only been a few books written on the subject. Jump to 2006, and PGP & GPG: Email for the Practical Paranoid is a welcome title." Read the rest of Ben's review.

Ravi Kumar writes "PHP and MySQL use is so prevalent that nowadays it is hard to miss seeing a website on the net which has been built using these technologies. The beauty of PHP is in its open nature and the rich set of libraries and modules which imparts a lot of power and flexibility to the programmer. Similarly MySQL is a free database which is ideal for use as a backend for any website. And not surprisingly there are a plethora of books in the market which explains these two topics. One such book is Beginning PHP and MySQL 5 from Novice to Professional authored by W.Jason Gilmore published by Apress." Read the rest of Ravi's review.

Ben Rothke writes "For most people, having their clocks accurate to within a few millionths of a second is excessive. Yet there are plenty of reasons to ensure that clocks on networks and production systems are that accurate. In fact, the need for synchronized time is a practical business and technology decision that is an integral part of an effective network and security architecture. The reality is that an organizations network and security infrastructure is highly dependent on accurate, synchronized time." Read the rest of Ben's review.

Alex Moskalyuk writes "PHP and XML seems like a marriage made in heaven. Powerful manipulation functions and support on the core language level in PHP5 combined with universal extensibility of XML make it a technology of choice for quite a few Web enthusiasts and companies out there. However, anyone inspired by PHP's ease of use can probably find a good cure from insomnia when facing with XML specs. With all the DTD's, XML Schemas, XSLT and XPath queries one can easily get the impression that the world is changing on them, and perhaps sticking to hard-coded HTML with PHP statements combined with SQL statements for data retrieval would be within the zone of comfort." Read the rest of Alex's review.

Graeme Williams writes "In the past, I've written the sort of poorly-structured non-compliant web pages that can only be produced by a combination of laziness and confusion, so I'm an ideal test subject for Head First HTML with CSS & XHTML, an introduction to building web pages which focuses on compliance with the most recent HTML 4.01 standard and XHTML 1.0 standard. The book starts with the simplest of web pages, and builds from there to a solid foundation for writing simple well-structured web sites. It's clear and thorough, and will be effective both for the complete beginner and in bringing stale skills up to date." Read on for the rest of Graeme's review.

Sdurham writes "Adobe Photoshop and its many siblings have long been a staple of artists, photographers, and programmers interested in doing serious image manipulation. Increasingly, Photoshop's younger sister Photoshop Elements comes prepackaged with digital cameras. Yet many of the users of these cameras lack the time or patience to tackle the steep learning curve of the Photoshop family and are left asking "How do I do ... ?". Elizabeth Bulger's The Adobe Photoshop Elements Crafts Book attempts to bridge the gap between Photoshop skill level and personal creativity by stepping the reader through 14 different craft projects. In doing so, Bulger tries to provide the basic Photoshop Elements skills necessary for readers to pursue their own projects after finishing the book." Read the rest of Sdurham's review.

Daniel Holmes writes "In addition to using PHP to 'just get the job done' for years now, I've been running a humble user group here in the Midwest. As such, I have read numerous books on and around the subject, always looking for something great to inspire my colleagues, group members and myself alike. There are a metric ton of books out there that will walk you through PHP syntax -- this is not one of them. If you are looking for a book on rapidly developing prototype sites, or writing lots of HTML-embedded PHP, just keep looking. But if you have read even one of those books, or just felt like your programming style itself could use a little upgrade, then go get yourself a copy of PHP 5 Objects, Patterns, and Practice by Matt Zandstra." Read on for the rest of Holmes's review.

SFEley (Stephen Eley) writes "Todd Cochrane's Podcasting: The Do-It-Yourself Guide has been heavily pushed in the podcasting community as the first of a wave of podcasting books to be released in the next several months. All of these books will surely cover the same themes, more or less: what podcasts are, how to listen to them, and how to produce your own. The popularity of podcasting is exploding right now, with coverage in every press outlet and Apple hyping it as The Next Big Thing. It's easy to see that there will be a huge demand for these books, even if they don't do much more than state the obvious. So what about this one? Other than being the first, does it offer any compelling virtues for the would-be podcaster or listener?" Read on for Eley's answer to that question.

swsuehr writes "Performance Tuning for Linux Servers provides information and resources for Linux administrators looking for a guide to the background, options, and commands available for enhancing the performance of a Linux server." Clear enough -- but read on for Suering's review of the book to see if it might help you at that task.