Yes, it is because they can be merged mined that I mine them. I wanted to see how many chains one could merged-mine at once. I wish there were more but most moved to Open Transactions because miners turned out to be insanely hostile to merged mining. GRouPcoin is the weather-vane they watch to see if maybe one can survive as a blockchain despite the irrational hostility, though so far it seems the way to do so is to remain obscure...
(Notice for example no-one is bothering to attack BBQcoin anymore either as they think they already killed it.)
-MarkM-
besides BBQCoin is a joke
gonna take a look at them later, ty