Some encouragement here for micropayments and tipping models to pay content producers.
The payments here are higher than would be possible with a divisible coin, 30c to $1, but seem to be working for high value content (opinion pieces, but not news). On SAFEnetwork, we should definitely try this model out too.
Can we be persuaded to pay for online news? http://www.bbc.co.uk/news/technology-34943524