To trade Continuumcoin CTM vs BTC, LTC and DOGE, we can go here:
https://www.swisscex.comThis exchange is new, and they add very quickly all new altcoins
I already pointed some sha-256 miners of mine to continuumcoin pool
http://ctm.ispace.co.uk/CTM profitability at this moment is around 250 vs BTC when sold @ 0.00000002
to calculate profitability:
(block reward/coin difficulty)/(btc reward/btc difficulty)*price*100
probably solo mining could be fine too...