Hahahahahah. At least this way we can test-run it. It hasn't really struck my fancy, so I'd guess I'm in the clear.
Yeah, that's funny ... 'coz MAMErs are well known for buying after trying !

The point is that there are folks who try to create things for the hobby and, in this case I am talking about the broader definition beyond just MAME, and they spend tons of time and effort. Then folks come along and piss in their faces ,including, in this case, a MAMEDev who gets horribly bent-out-of shape with the way his own work has been misappropriated, but has no qualms about enabling the misappropriation of somebody else's work.
There are people who do things that are good for the hobby and people who do things that are bad. Pissing in the face of folks like Jeff is a bad thing and don't exactly encourage people to do good things.
I'm with Frizz and Level (particularly his pre-edit thoughts) on this.