I'm not saying 37signals did it, but I bet someone who read this post did: http://37signals.com/svn/posts/3099-benchmarking-basecamps-u...

I'm sure it was tempting more than a few people with the resources.

Edit: just to be clear I meant any reader of signal vs. noise could have seen that (and Jesse's #1 comment and the jokes about DDOS in the comments) and decided to pull a prank. 37signals would never do that to anybody.