Hey guys, some friends just told me about a website called Craigslist, however I would like to hear your opinions on it, is it any good?  

What were you planning to use it for, momox?  There are many things you can do on Craiglist - from searching for a job to buying and selling items to looking for a friendship, a relationship, or even casual sex.
In my own experience, I have found that many of the ads I've found within the Strictly Platonic and especially the Casual Encounters sections are phony ads that you can find repeated on the Craigslist sites for different cities.  They're often put up to lure you to various paid websites, or just to get your e-mail information so they can send you spam.
As the poster ahead of me said, be extremely careful when dealing with people in person through Craigslist.  If you are buying or selling something through that site, I would try to do it in a public place, and not have people come to your home, if possible.