Just found a great page which clears up a lot of myths and untrue allegations made about Linux and the open source software movement in general. If you're unsure about Linux for whatever reason, then read it.

I'm not trying to say 'Linux is for everybody and does everything' here. It's not and it doesn't. However, for a basic web/email/office suite workstation, Linux will suffice. And servers... don't get me started. Linux (or in fact any Unix-based platform) is awesome for servers, in my opinion. But that is only my opinion. Draw your own conclusions.