I've seen authors who won't release source due to fears of that replication. of course that goes against the whole nature of releasing source, it IS pretty unfair of people to make those replicas especially if they havnt tried to at least contact the author. whenever i mess around with someone elses emulator i ask, then i give them my modifciations to add to their own, i dont' see the point to all this gloryhogging that is going on, only serves to hinder growth.