The only danger in relying on friendfeed is that it was bought.<p>Otherwise I'm curious of what algorithms or measures you used to score shares?<p>I am working with another developer on a semantic/social processin application. We use external trending sites for search a well as Twitter search API with JavaScript. I think value comes from helping to make new connections, or raising interesting content from friends that may have been missed.<p>Check VictusMedia.com if you're curious (next patch is adding some groovy features once bug smashing phase is cleared).