I'm more interested in the possibilities of cross-site sharing (in something resembling real time). So, if there were a Gnutella like system that could every morning pull article headlines off Infolets and the sites that Infolets trusts and could then populate a designated section of your webpage with links to the articles from those site that are relevant to the current content of your webpage, would you use it?
Context relevant article headlines can almost be done today us Meerkat a little feedback to the the keyword processor and you've got youself "Context Relevant Headlines". Not bad for a days work ;).
