According to these two posters he is. Both posts claim he ripped them off in a Fantasy Football Contest.

“Joseph Wilk is a thief, don’t do business with him.”

In addition to that, according to Soler18 on Rennlist, he stole his money and refused a refund. Only after he filed a Paypal dispute was he able to get his money back.
https://rennlist.com/forums/991/1071345-530whp-991-2-boostaddict-stage-1-review-2.html
Would you want to do business with someone like this?
https://mbworld.org/forums/c63-c63s-amg/837829-what-happened-boost-addict-lol.html

