A friend wrote this for my site. I thought it was a great read, I know i've heard the question many times "what's the difference?"
http://www.web-rover.com/forum/kb.p...int=true&sid=b597160064fea763584bf14516581971
http://www.web-rover.com/forum/kb.p...int=true&sid=b597160064fea763584bf14516581971