I like:<p>The Museum of Modern Betas
<a href="http://momb.socio-kybernetics.net/" rel="nofollow">http://momb.socio-kybernetics.net/</a><p>and<p>eHub
<a href="http://emilychang.com/ehub/" rel="nofollow">http://emilychang.com/ehub/</a>
Quora's been great for finding about under-the-radar startups because of the strong community of entrepreneurs and VCs<p><a href="http://quora.com" rel="nofollow">http://quora.com</a> (invite-only right now)
<a href="http://springwise.com" rel="nofollow">http://springwise.com</a> is another website I use to discover new and interesting ideas. Reality is you need to keep your ear to the ground in a few places.
Google this:<p>site:news.ycombinator.com "rate my" or site:news.ycombinator.com "review my"<p>I wish there was a better way. Might be nice to have an entirely separate category for new startup posts on HN...