Earlier quoted context omitted.
> failing to mention that your posts are with the hope of raising the price because you have a vested interest in that... seems like a material omission, if nothing else. And if you run around telling people that you just bought some of the stock you think is going to the moon, is that supposed to make them less inclined to buy it, or do they now just think you're putting your money where your mouth is? > what matter…
I don't have the energy to dissect all this, but you're completely conflating legality, enforcement, and provability. We have juries for a reason. Most would a priori find it hard to believe that someone who found a winning strategy would repeatedly post it on random message boards with altruistic intent.
It's not clear why telling people you think a stock is going to go up after you've already bought it would require altruism, and more than that you would benefit by building a reputation as someone who makes accurate predictions if you turn out to be right, independent of whether anyone acts on your statement by buying the stock.