Ok, that's true. But with flat screen TVs I can at least understand the decision - we have been programmed by evolution to favour ourselves and our family. I can't understand why Jimmy Wales is so biased in favour of a group of people he has no personal connection to.

How many lives could be saved with $50 million per month? Is it really more important to keep Wikipedia ad-free than to save those lives?

To most businesses writing software, XP is new. Of the 6 software teams I've worked with in my career:

• None have had a suite of automatic test cases
• None have had an end-user working regularly within 20 feet of me
• None have had programmers writing code in pairs
• None have had regular release periods anywhere near 3 weeks
• None have had a problem asking me to put in overtime for two consecutive weeks

I've always felt my productivity ranged from average to downright non-existant. By a not-so-strange coincidence, that's also been the range of my enthusiasm and enjoyment at work. (Perhaps I'm a slow learner, but next time I get a job I will not simply offer myself to the highest bidder).

XP is not for everyone - some people simply hate pair-programming and think unit tests are a waste of time. But I suspect that for developers who enjoy explaining and understanding code and requirements face-to-face, it is the most efficient and enjoyable way to work.