People, for many of these brokers - the ones that aren't just blanket rejecting penny stocks anyways - the type of penny is going to matter: is it DTCC restricted or not, is it registered or not, etc. When asking, post the penny stocks you are holding others can get a better idea of what may be rejected.
I'm trying at Scottrade but you know what, I figured that it be best to buy some of the same stock in Scottrade THEN transfer your old ones to add on and some of the extra and if you can don't transfer all of them at one time. I've a couple of dead ones that I'll leave Zecco as a crap gift. This is going to be my strategy. GLTU