Yes, you can find good JV's in WF.

And about giving out review copies in WF who say they are thinking to promote: Just check his backround and what he talks in WF. Who he is. If he claims to have list of 50,000 but posts show, that he started out with internet marketing 2 months ago, then it's not hard to see, that he/she wants your product for free.

Or if you get some old senior Warrior who wants for review copy...sure...give. If he comes back in future...who looks stupid then? Not you. There are guys who live on review copies....they never take action and just read every day. Just ignore them and move on.