Hi talk PHP. I was planning on starting a website that would allow users to create their own website as a sub domain (similar to freewebs). I used to program with PHP a lot, but I started working with computer hardware rather than programming, so I'm pretty rusty, and I see php 5 has come out now. I was wondering what the safest way to allow users to create their mini-websites would be. what are some of the possible hazards I should be planning ahead for?