One thing that never comes up in these discussions is community moderation. Craigslist relies on the community to flag off content that's inappropriate (spam, o

One thing that never comes up in these discussions is community moderation. Craigslist relies on the community to flag off content that's inappropriate (spam, overpost, whatever). I wonder of the Craigslist folks are looking at alternative interfaces as ways people will get the good stuff (real listings) without having to do the work of wading through and flagging off the bad stuff.