I've thought about setting up a chroot for Apache as I work on tracking this particularly annoying hacker, and I appreciate being reminded of how to go about it. I'm a professional *nix Sysadmin, and this is exactly what I needed.

As others have pointed out, this is not a "paint-by-number" for newbies. And it is good that it is written is such a way as to discourage them. This type of work can totally break your webserver (it is actually intended to semi-break your webserver, in a very specific way), so if you don't know what to do, best stay away. The specific step-by-step (which some should probably write) will be very specific to particular Unix/Linux versions, the webhosting setup, the CP used, etc. For me, wading through all that to get to the kernel of the matter is pretty tedious; I really appreciate an article that gives me the important points without getting lost in the details.