>>19
That's not the point. The point is that if you want to run any combination of software on Linux, someone else will certainly have done it before you and fucked up in ways you haven't even thought of, and will have documented it. If you're using a BSD or other obscure OS, any problem you will run into (and you'll run into a lot) will be yours and yours alone to solve.
A competent sysadmin should be able to solve those problems himself, but it's stupid to waste time on that when all you want to do is run a webserver.
Unless all you want to do is serve up static HTML for a low-traffic website, which even Windows can do, Linux is your best bet.