What I said in comments on the other story (http://news.ycombinator.org/item?id=1344138):
"When I last thought about it, I became convinced that we don't need an single implementation, we need standards for multiple implementations to interact. Stuff like RSS, OpenId, OAuth, etc. It's a lot less glamorous to work to these, and to try to push them forward, but it's a lot more useful."