To start us off, I have the following: http://www.gabrielweinberg.com/blog/2010/04/in-the-pursuit-of-traction-have-you-considered-all-verticals.html
http://tractionbook.com/
http://cdixon.org/2009/08/25/six-strategies-for-overcoming-chicken-and-egg-problems/
http://viniciusvacanti.com/2011/02/08/how-to-get-your-first-1000-users/
http://www.quora.com/In-the-shortest-amount-of-time-whats-the-best-way-to-get-100-beta-testers-for-my-new-mobile-startup?__snids__=14203509#ans334713
http://betali.st/submit