Being able to Flattr VVVV is a cool idea, but have you ever considered starting a Patreon?
Patreon is pretty widely used right now, and the funding model would allow people to pledge a consistently recurring amount of money, which could be a really good thing if a few people make pledges.
I’d definitely love to contribute some money each month to one of my favourite art tools, and while flattr is fine, maybe one size doesn’t fit all and a few different options could benefit the community?
What do people think? I love VVVV and think it deserves as much support as it can get. I’d love to see new ways to support it for people who aren’t necessarily doing things on a larger commercial scale, especially if it led to improving the software.