I think the fact that you even asked the question in the first place shows that you care about your user base, which in invaluable! The donation is a small price to pay for commercial grade software with the kind of support and number of updates that GameEx has. I have just began to M.A.M.E my Virtua Fighter cab and build the PC to go into it. After tinkering with GameEx on my main machine I really cant wait to get into the cab. I think having an easy to use and configure front end that does everyting that GameEx can do will be the finshing touch that actually defines how well the cabinet works as a whole. Knowing that my donation will (when I donate) help to keep the software that I love going adds that little extra satisfaction to the project.