Unix Web Hosting Resources Unix is an open source operating system so anyone who wants to look at the code and change it is free to do so. This means that when a problem is found such as a security flaw, anyone with the skills can fix it and send out the patch. With Microsoft, you have to wait for the company to fix it and you can't be sure just exactly what they've done to fix the problem since they don't let you look under the hood. The ability to have total control over what you are doing and its reputation for stability and security are a large part of what makes Unix such a popular choice. Unix is also features a command-line interface which doesn't waste a lot of system resources. Thus, with 32 or 64 MB of RAM a Unix machine can still run multiple programs with perfect stability.
The Unix community is very supportive. Think about your favorite sport and then imagine the team with the most rabid, loyal fans. Linux users are pretty similar except that if you show up at the game cheering for Microsoft 'flame' you (post nasty messages on their forums about you) instead of beating you up in the parking lot.