You can exchange namecoins for bitcoins, that is, if you have enough. ratio is now 150:1. I mine 1 NMC for every 0.1 BTC. so at 150 NMC, I have 15 BTC en than exchange the NMC for 1 BTC and you have 16 BTC! Or hold on to the NMC, someday it will probably be worth more than now, same woth BTC.
Where/How exchange it?