For anyone curious about craigslist marketshare and competitors, this is the best resource I've seen on the topic: http://www.quora.com/Craigslist/Why-hasnt-ano

For anyone curious about craigslist marketshare and competitors, this is the best resource I've seen on the topic: http://www.quora.com/Craigslist/Why-hasnt-another-product-disrupted-and-replaced-Craigslist http://www.quora.com/Craigslist/Why-hasnt-another-product-di... In that discussion is reference to this graphic, which does a good job illustrating many of the would-be craigslist-crushers (although most go after niches rather than the whole pie): http://s3.amazonaws.com/data.tumblr.com/tumblr_kwkfi5tqEi1qzqh0wo1_1280.png?AWSAccessKeyId=AKIAI6WLSGT7Y3ET7ADQ&Expires=1340750527&Signature=OiMRxp%2FZU1YLGfYJB2JSuv%2Fgd4A%3D http://s3.amazonaws.com/data.tumblr.com/tumblr_kwkfi5tqEi1qz...