What a GREAT blog post from Fred Wilson as he flew to Portland!  He rapid fires 30 things including his thoughts on the bubble 2.0  (maybe about to pop, maybe not), and most importantly offers up this billion dollar company idea:

 15)    Why hasn’t anyone been able to aggregate all of my comment activity across the entire web and turn it into a feed that I can put into my lifestream on Tumblr? There are a bunch of companies working on it, but I don’t think anyone has nailed it yet. And I am not just talking about blog comments, I am talking about ratings and reviews on Amazon, Yelp, Menupages, Digg, etc, etc.

Fred, I don’t get this either because the technology is definitely in place and although I think this would take a pretty substantial server infrastructure – to cache and search a lot of content regularly – it seems like the payoff would be the best social networking environment out there. 

I’m saving up my money so, someday, I can be a cool VC guy like Fred and ride coach class even though I don’t *have* to ride in coach.  Kudos to him for that.   Frankly, I have a feeling the people back there are more interesting anyway.