Fortune Small Business - Small Business - Following the Leader: "Tribe.net is the next generation of online classifieds. Local and community classifieds is still a $12 billion business, with no market leader. Add another $4 billion to $5 billion for online. With Tribe, you connect only with your friends and your friends' friends, and you're more likely to trust their listings for a roommate because they're not coming from strangers, as they would in the newspaper or on Craigslist. "