Everyone’s talking about all the new applications popping up for Facebook (did you hear ‘Where I’ve Been’ was sold to TripAdvisor for a cool $3 million?), but here’s something a little different: TrustPlus Inc. is launching the first (to my knowledge) inter-network application for social networking sites. More than a simple mash-up, the company is collecting and connecting information about users from several Web 2.0 sites including eBay, Facebook, MySpace, Craigslist, LinkedIn, Amazon, Friendster, and Backpage.

The premise is that your online reputation (and identity) shouldn’t be fragmented across multiple sites, but rather holistic and portable so that people you interact with get a consistent view of you. Similarly, when you view others’ profiles, you should be able to see how they are rated at different online communities. Building on the post below, this could also help improve the “trustworthiness” of peer-to-peer transactions. From the company’s Web site:

Know who to trust. TrustPlus provides a customized Reputation Score in any situation, weighted by an unlimited number of factors, including who the person knows and the context of the interaction.

Use your good reputation anywhere on the Web. By building a reputation with TrustPlus, members can use it anywhere on the Web. Now online sellers can aggregate their reputations in one place and leverage them everywhere they sell online.

View anyone’s reputation. The “TrustPlus Reputation Viewer,” a browser add-on, allows users to view anyone’s reputation information on-the-fly and across multiple sites.

For more insights, also read the Globe & Mail article, “New reputation score follows you online.”