I tried the donation route Fatal on an app that had 300,000 downloads. I ended up with about 50 donations. But I received THOUSANDS of emails telling me exactly what they thought was wrong/new features/general *****ing. I tried to support them as best I could but when I started getting death threats against myself and my family when I didn't give them the answer they wanted (no I am not making this up) I made the app paid (still leaving a cut down version for free). At least that way If I was going to have to deal with *******s I would be making a small amount from it. The whole experience of that and a number of the responses here have left me with very much a feeling of FARK USERS, and an urge to write software purely for myself only.