there are two, and here they are: https://blockchain.info/pools
if CURE mergemined with BTC, cexio and that unknown chunk of private hashing would control most of the curecoin generation, pumpanddump them into the ground for BTC like all the other mergemineables, and generally reduce Curecoin's value.

Making a conscious choice to point one's SHA at Curecoin to benefit and encourage folders instead of just amassing mBTC is what gives CURE part of its value. If all the SHA was already guaranteed to be done as part of a mergemine, miners would consider X Curecoins per Ghs and the prices of it on exchanges would reflect that, not the folding.

Also ASIC devices are superceding themselves so damn fast now and becoming pointless for mining BTC so rapidly that Curecoin may as well use that hashing for the blockchain, since scrypthashing it would be a waste of fold-worthy rigs.