With CS:GO continuing to skyrocket in popularity in the e-sports scene, corruption is bound to happen. Everyone wants a piece of the pie, and scum tends to surface sooner than later to grab some fast cash.
If you're looking for a tl:dw of this video, it's a little complicated, but I'll try to give you the gist. Two major CS:GO Youtubers (TFMartin and Pro Syndicate) who make a ton of "skin gambling videos" in which they teach people or demonstrate how easy it is to win big money gambling skins on CSGOlotto. H3H3Productions points out that both these Youtubers, who have millions of followers between them, actually OWN the website they are gambling on and fail to disclose they are actively crediting themselves free money to promote their site. It's illegal, it's deceptive, and it's convincing millions of people every day that winning money really is that easy when in all actuality it's just as unlikely as the traditional lottery.
If you're a fan of CS:GO, you really should watch this whole video...