Anyone less than an excellent co-founder, is worse than no co-founder at all. I have been there and done that many many times. Pressure is intense, 100 hr work weeks, then the "other guy" is a little cynical or has to dumb everything down. It's worse than no partner at all. I'm not sure about the advice to go and get a co-founder no matter what. I'm sitting on the next big thing and I have $ to pay people, and do everytbing else myself. Now, I'm supposed to get a co-founder? Why? And if there isn't anyone I guess I'll just shut it down. No wait! Why not spend 6 mos of precious time searching.