I think Potcoin has the early advantage. Here's a post I did about them a while back, not much info, but the comments brought up a coin I hadn't heard of until then that offers free fem seeds for holdings, kind of a POS bonus!
I explain why I think one or two of those coins is actually going to be very valuable AND useful.....which most coins are not both of those things.
thanks i read and posted. and am now reading about that ganja coin cheers