not at all..  you can join this site to exchange them



 https://vircurex.com/welcome/index?referral_id=756-12066 


 I get a small kickback from them  for referring you to join.   It comes out of their pocket not yours.   if you do not want to do the referral link  here is a direct link



https://vircurex.com/ 


 the account is free to open.   1 NMC = .0063 BTC           

  so when the nmc get big  at bitminter  say 5 or more send them to vircurex and switch them to  btc



 

 this is my nmc address with them:

MvyqkhN7HotQLejWZMduA8Vq2NLitx4Axx    you can send me a tip for the info or not whatever you want to do.