So I have seen tons of really brilliant projects that were abandoned simply because the developer wasn't able to continue working like a slave to satisfy continuous stream of demands from bastard users who didn't give a fuck to even say "thanks", not to mention donate $2 pm to a project they use and benefit from on daily basis.
Therefore, whenever I see a project I use and like and don't want it to disappear, I just start donating to it, using any means available.