Also, I feel like trying to recruit designers off Dribbble is like trying to recruit novelists off Twitter. It's hard to gauge somebody's higher level product design skills by looking at 400x300 shots devoid of context. The benefits usually associated with having designers on board come from their empathy and desire to solve problems. "I just want to make pretty things" designers on Dribbble won't provide you this if they are the only designer you have.
Last month I was communicating with designers on Dribbble looking for full-time startup work, and I was sadly unsurprised to find out that none of them were interested in solving problems. (Note: I'm a designer myself)