Intelleco probably wouldn't mind setting up something like a PayPal account for donations. Why don't you ask him? Maybe if we bribe him enough, he'll crank out an even better emu then the next release offers, or continue on with the project. Most of his setbacks appear to be mostly financial-related, unfortunately =/
$50 wouldn't be necessary, maybe something like $2-$5 donation per person. If everyone who used SNES9xGP and wanted a sizable (or rather expedient) update donated in that range, I think he'd have a pretty penny on his side.