I am interested in such coins as nwc, cdt and mana, what do you think of these projects? Should you buy these coins?
The problems with coins which are only listed in some small exchange is, that trades and price is likely manipulated. It will be easy to buy your coin there, but because of small demand, it will be much harder to sell it. Also, risk of how safe are small exchanges is always present.
I would say go for it if you are young to put small part of your portfolio there, otherwise is not worth it.