I actually met somebody who had better luck predicting the winners of football games by literally throwing darts at a board than anybody else in the pool.

Deception is tricking people into paying or paying more for a service by lying. And I’m pretty sure a lawyer could say that that is lying UNLESS you never mentioned your last picks and how you have good choices. Just say I’m not giving my prediction for Super Bowl unless you pay $5

I anal, but yes this is legal. You should do it and post the results. Also this is not investment advice.

I've thought about this with the stock market and predicting that it would go up or down. After enough predictions, one would have an email list of people that saw one accurately predict the stock market after n times. This could then be used to request payment for future predictions.

While I can't state that this breaks any laws, it is possible it might somehow. However, even if it doesn't, it's a really fucked up thing to do because it's conning people out of money using a scam. I highly recommend against it and responding to emails of people predicting future outcomes of events that vary wildly with any certainty.

I wonder in some sense how this isn't fundamentally (yet fucked) the same idea asthat driving arbitrage.