I have to agree. I have one of each. The Neato XV-11 is "smart" and 2 years later I'm still on my first battery. I don't remember the XV-21 from when I bought my XV-11. If I was buying one now I'd get the XV-21. I use it for all the rooms (1 floor) except the master bedroom in which some of the furniture is too low for the Neato to get under.
The Roomba I now only use in my master bedroom. Gone through 2 batteries in 2 years, and *every* time it finishes I have to remove the "brushes" and cut (with small surgical scissors) the hair, carpet fibers and such that collect on the ends. It is *really* a PITA. The only advantage is it's a bit shorter than the Neato so it can get under a few things the Neato can't.
Because it will be trivial for a spammer to check his posts from another account?
It depends. For example vBulletin has their "Tachy goes to Coventry" option. I did use it in the past but haven't now for several years because all the person has to do, assuming the site is open to the public as my forums are, log out and view the thread their post is in (or if it's a thread they started and thus just has their post in it, just look at the forum listing they posted in) and they will see their post/thread isn't there. No need for a different user account. What I do with all spammers is BAN them. In vBulletin it locks out that email address. The spammer may have many, but since it's time consuming to make another account and try again, especially when they see their first attempt failed, they generally go away. NOTE: I'm referring to HUMAN spammers as opposed to script BOTs, which are a whole different story. I found a way, and it has nothing to do with IP or email address blocks, to completely block script bots from completing the Registration process in my forum. I just put in a timer so that if it takes less than 10 seconds (you can set the time you want, I chose 10 seconds) for "someone" to complete the registration, it's going to be a script bot so the registration is aborted. I just last Saturday saw a wave of script bots start registering. I personally have never seen so many script bots in such a short time on my site. A long time ago I set up the board with "non-standard" screens to post in or start a new thread in {I edited templates} so the bots don't know how to post or start a new thread on my forum so they couldn't actually post any spam. But - It was annoying me - something like 45+ BOT registrations in less than 6 hours. I put the registration timer in and BAM - No more BOT registrations. Script BOTs are relatively easy to defeat if you remember that 1. They are FAST, and 2. They are just scripts, so when they run into a situation that they're not programed for (such as "non-standard screens) they have to stop. As always, YMMV
No mod points to give today, but +100 - I wasn't directly involved until the 1980's but I do know the history and you're right on. I was working for a defense contractor and also saw quite a lot of the pre-history of what we have today.
I was even running a POTS BBS running BBS-PC on an Amiga 1000 from 1986 to 1990. Not the internet, I know, but my motivation was working with was the "internet" at work at the time. I started my first internet web site in 1995, all hand coded (no WYSIWYG program) and it went public on 5 January 1996 (that one is still online today).
I'm also in the "Stay Off My Lawn" stage of life and am continually amazed at the expansion and evolution of electronics and communications. When I was in college I was lucky to have a portable electric Olivetti typewriter and Sharp 4 function "portable" calculator which would run on AC or it's internal rechargeable batteries (I still have it in storage!). That Sharp was great for physics and math classes and it only did add, subtract, multiply and divide. I bet you, like me, remember the time period where slide rules became obsolete for all intents and purposes.
Your ticket price is not the real price. Amtraks ticket prices are Heavily subsidized.
So are the airlines. What's your point?
Work without a vision is slavery, Vision without work is a pipe dream, But vision with work is the hope of the world.