Some folks on this forum have argued that posting screenshots of big video poker jackpots or winning sports tickets is evidence of something, that these screenshots provide some measure of credibility. I'm going to quickly spell out why that's a bunch of hooey.
Without context, screenshots of jackpots and winning tickets mean very little. In fact, in recent years some high stakes sports bettors have used exactly that kind of "evidence" to garner attention and promote themselves as winning players. They've taken people, media included, for a ride. Context is everything. Archaeology provides an almost perfect analogy. Pot hunters and amateur fossil hunters are held in low esteem because by extracting evidence without recording context, most of the informational value of the artifacts is lost. The context, properly recorded, can actually tell you much more than the artifacts themselves.
Screenshots of jackpot wins or big sports tickets have the same superficial appeal and lack of context. A huge winning sports ticket could represent a hedge made against an even larger losing ticket. A 50-1 futures win doesn't tell you how many teams were played besides the winner.
People often ask me, "How can you tell who wins and who loses?" The short answer is that you can't. That applies to everything from video poker to poker to sports wagering. My completely subjective estimate is that between 50 and 100 individuals or teams of individuals win long-term in the United States. My more interesting estimate is that the number of people who can identify these 50-100 is not much larger.