From the folks who brought you Under the Radar, comes a new event called the Momentum Growth Conference. Instead of the cool new companies you've never heard of, Momentum is all about the cool "old" companies that are gaining a head of steam, like Sidesteop, Zillow, Six Apart, SlingMedia, CafePress, etc.. There will also be a bunch of really great folks speaking like Heather Harde from Fox Interactive, Megan Smith from Google and Bradley Horowitz from Yahoo. The conference is this Wednesday and Thursday (September 27th and 28th) at the Computer History Museum in Mountain View and you can get a $170 discount if you use this link. Should be a great conference.