Can mazacoin be merged mined with bitcoins?
I believe Luke has gone on record stating that they don't support alternate currencies except those who might be doing something new and/or useful. NMC is the only one he recognizes as such to date.
I don't know anything about mazacoin, but you'd have to get that past Luke, first.
NMC is not the only one, but until recently was the only one that supported merged mining.
I've been encouraging wizkid057 to add HunterCoin and MazaCoin, but he hasn't had time yet.