I figure that it has to do mostly with all the scam PTC's out there, and this has caused Paypal to tighten it's policies regarding MLM's. I feel it has nothing to do with Clixsense itself. Paypal, along with the other processors have been under heavy scrutiny, since the aftermath of the September 11, 2001 terrorist attacks in the United States. Processors, since the enactment of the Patriot Act, have had to show the United States Government that they are not allowing money laundering and other financial crimes.
Clixsense has always paid. I personally donate what I earn here to Children's hospital. I do not know the Clixsense owner personally and have never talked with him, but I really do not feel, as has been suggested elsewhere in this forum, that this is the end of Clixsense. I honestly feel that people who are concerned about this, have no reason to feel this way.