Is this something legal?  Are there no manipulations related?
Because if it's really marketing or advertising just to make a cheap or low market cap meme to soar up high, then seems it could be a legit thing.

I think most memecoins right now really went in this kind of action. This is also another reason why a lot of people is really tempting to invest in such low marketcap memecoins because it is high risk, high reward.