the url is [www.craigslist.org
There are CL 'general community' bulletin boards for most of the major cities in the US. The LA, SF and NYC CL's are the most active.
There are also various forums/fora on CL--health, spirituality, psychology, parents, etc.
Unlike the 'General Community' bulletin boards which are city-specific, you can post from any city and it will land on the forum, with city initials next to your post.
You can run searches on the General Community bulletin board, but as of yet, its not possible to run searches on the forum postings.
Posts expire 10 days after you put them on the bulletin board.
If a lot of people decide they dont like a particular post they can vote to 'flag' it, which means it is removed. (Kind of like Survivor)
Flagging happens at the drop of a hat on the NYC post.
In other cities, people are more likely to respond by 'counter-posting' rather than voting that a post be flagged and removed.
If you're in need of some amusement, go to 'The Best of Craigslist'.
If you're ready to scream at the moon, go to 'Rants and Raves'.
Anything and everything shows up on CL.
Someone posted, saying he or she needed a bunch of perfect live cockroaches for a scientist friend's birthday party. The person was willing to pay $200
I e-mailed the person and suggested they contact a skid row homeless shelter and soup kitchen where I used to work.