Web 2.0 Defensibility

Guy Kawasaki has a great post on what to say and not to say when the VC ask how you would defend your Web2.0 biz idea. Worth checking out, especially the "what not to say" part. I am not a VC and I don't hear a lot of pitches (though I do hear some), yet I've personally heard a lot of bad answers regarding how to create barrier-to-entry and they've always made me cringe, so you can imagine what a turn-off they could be to the real VCs who hear them all the time.
http://blog.guykawasaki.com/2006/10/how_to_change_t.html