Sometimes I wish that online store like Amazon gave people the option to pay more than the asking price for some thing, where all surplus money would go to the

Sometimes I wish that online store like Amazon gave people the option to pay more than the asking price for some thing, where all surplus money would go to the creator of that thing. This could even extend to zero-cost items like free software. You could "buy" a software package for zero dollars, with a five dollar tip going to the author. Amazon uses a lot of free and open source software, so this sort of thing could be in their interests even if they don't make money off of it directly.