Boycott Kim Kardashian Website -- Run By Convicted Con Man

The man behind BoycottKim.com is a convicted felon with a history of conning people -- and ... SURPRISE!!! ... there are serious questions over whether he's grossly exaggerated the number of people who have signed the petition to rid the world of all things Kardashian.

Frank Basti -- the man behind the movement -- is freshly off parole for a mail fraud conviction. Basti was nailed for sending notices to 5,000 California car dealerships, telling each of them they owed lots of money to the DMV and this was their final chance to pay ... or else.

Basti served federal prison time and was on parole until last July. Several months later Basti launched the Kardashian website.

Basti claims roughly 650,000 people have signed his petition. But according to Compete.com -- a prominent website traffic estimator -- only 24k unique visitors went to the site in December and 20k in November.

Basti tells TMZ it's not a scam and he's counting a previous petition and his Facebook page connected to his Kardashian website to justify the 650,000 number. He insists he's not making any money off the site