Hashrate.org is going to be very profitable for 'mining' NXT. And I can tell you the PoW probably isn't going to last long in general, so you should probably be 'mining' coins like Nxt that are PoS and going to have future success because of all the features. The Asset Exchange will launch in about 18 days or so, and that's just the beginning.
I'm interested. Does NXT still have a low enough diff to be efficient on a small scale (i.e. small computer farm)?
One of the most interesting concepts behind NXT is that it is probably the greenest crypto currency, which at the moment is quite an under recognized part of our society. The reason for this is the mining protocol, when coins are being mined it's all based on Stake coins that are forged. NXT does not over exert energy resources just standard electricity and the process electricity that is created by the client, it does not special mining hardware or alternative equipment leading to less electrical consumption.