Fuck, here we go again, a bunch of fuckers saying what they THINK is going on, none of whom have any hard proof whatsoever.
If you don't like a sponsor then just promote one you do like and quit making stupid air-headed accusations that in a court of law you'd be fucking laughed at for.
If you got proof of shaving by anyone (REAL PROOF ASSHOLES, not just what you THINK), then spill it. Let's see the hard evidence. Your stats are not evidence by the way, sometimes the fish just ain't bitin'. (duh)
Otherwise shut the fuck up and get on with business.
Or
Hire a fucking detective to GET hard proof that ANY company is shaving signups, or click-thrus, or their asses, or anything. GET PROOF OR SHUT UP ALREADY
There's your clue. Get it?

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