For those that don't read syn_promo, craigslist now has RSS feeds. I made some in LJ for things that I read:
clbos_wri - writing/editing jobs in Boston
clbos_etc - et cetera jobs in Boston
clbos_w4m - women seeking men in Boston
And I found that someone had already put on LJ the best-of-craigslist at craigs_list.