I think relevance is a hard problem to solve when it comes to news. You need to trust the community that filters your news for you and if it is an open community then that leads to all sorts of FAIL. Lots of exciting things happening in the area though.
FriendFeed/Twitter allows you to specifically choose each individual that belongs to that group that gets you your news. I just don't feel like these two companies focus on this aspect of it enough.
I think relevance is a hard problem to solve when it comes to news. You need to trust the community that filters your news for you and if it is an open community then that leads to all sorts of FAIL. Lots of exciting things happening in the area though.