I've sold primecoin in my bag since the BTC-e remove primecoin, I think it would be difficult to get a large volume of primecoin and a good future, I simply say the truth altcoin old as primecoin why eliminated from BTC-e .com as well as also the fate the same with feathercoin, then I decided to sell them
Also Quarks are not around anymore I think. Do anyone knows if there is a similar trending coin like Primecoin at the moment? It was a cpu coin which compared to other crap coins was actually doing something good to the science.