Tribe.net is now offering RSS feeds of their discussion threads, with plans to next offer feeds of their classified ads.

Right now our service is free. But we anticipate turning on pay-per-listings. We will allow users to pay for notice if youd like your ad to be at the top of the list or in bold or up for a certain amount of time, youll pay more. Were going experiment with certain pay models depending on how widely you distribute your classified. If you post it only with your friends it might be free but if you listed with the whole network, it might cost more, said Paul Martino, founder and CTO of Tribe.net.

It hence combines two cutting-edge trends, social networking sites and RSS technology.