[Pyrophoric]

This is a great addon but if you dont really have the time to maintain it then let others help. You dont have the time to support but there is still an expectation of donations. Those donations are going to start falling when the support does. Its and unfortunate cycle...

Eventually, that 25% would be closer to 1% and you might not find the time to support it at all. Instead of letting it get to that point, let others contribute with their time and expertise. Then, those of us who cant contribute in that way can still donate money.

Edit:

I was going to mention this before but it probably wouldn't work. Couldn't you require that people have a login to download and go back to only hosting Carb on your own website. In order to download, people would have to pay for the bandwidth and time spent updating the website, you could associate a fee per download.

Yes, you couldn't restrict the software so it would enable people to simply share it with their friends but it might be better then relying on donations.

Don't let any other site host Carb and just see if people pay for downloads. You could still offer a donation link for those who want to give more.