What's the difference between Bittrex and Mintpal? About pump and dump, I saw a lot of post about the end of this coin if added to mintpal, but I don't understand why can't be pumped and dumped on bittrex but it can in MP. I think anyone can move some coins and do the same from any Exchange (but I may be missing something).
Yeah, it can, and does occur. I think people are afraid of MP because it's more visible and higher volume. And of course dumps occurs quite often with voted coins, so they are fearful it'll occur with naturally added ones.
Big exchanges tends to be an automatic pump too, so of course there is that natural dropoff back at some point. Coins don't move up forever in a straight line.