This thread caught my eye: <a href="http://www.mechanicslounge.com/showthread.php?t=4982" rel="nofollow">http://www.mechanicslounge.com/showthread.php?t=4982</a>
Another great technique that I read about recently: be the opposite of secretive <a href="http://cdixon.org/2010/03/14/developing-new-startup-ideas/" rel="nofollow">http://cdixon.org/2010/03/14/developing-new-startup-ideas/</a>