No real sources, doesn't look like they've even really bothered trying to verify anything. Typical Gawker fishing expedition. Didn't "journalists" learn from the Rolling Stone fiasco?
This is nothing at all like the Rolling Stone fiasco. The article straight up disclaims that they only have the one source:
"We had no means of verifying Jasons claims directly. He said the women he knew had told him they wouldnt come forward, citing C.K.s reputation and power in the comedy world. The two members of the comedy duo who were supposedly subjected to the Aspen jerk-off incident wanted nothing to do with the story then, and did not respond for comment when contacted before the publication of this post."