[Citation Needed]

(pirate bay founders create flattr)

http://techcrunch.com/2010/08/12/pirate-bay-founders-flattr-...

Here is the video where he talks about sharing:

http://www.youtube.com/watch?v=IyGCsCpofVk

"How do you know they are profitable?"

Bandwidth isn't that expensive. With all of the micropayments that will go through their service, they will make a profit.