Today, I got my first ever tip, via Flattr.
It was (predictably) for vCardSplit. My gift that just keeps on giving... the cockroach of software!
Flattr isn't quite like other payment systems. This isn't a donation of a fixed amount - with Flattr you put money into a tip jar on a monthly basis, and go round "Flattring" things.
The act of a Flattr is kind of like a Facebook like - it can be public, which is why they call it "social micropayments". People can wander along to my profile and see what I've Flattred. If I chose to allow it, they could even see the amounts.
(But I don't. And yes, there's also an option to simply hide all your activity as well - including past activity. The company is run by Swedish folks, who seem to understand privacy.)
Some exhibitions cost a lot. In theory, Building The Revolution: Soviet Art and Architecture 1915-1935 cost me a tenner. In practice, it cost a lot more as I walked away with three heavy hardcover books...
For me, there are two major things I learnt at this exhibition: