I reported only last one and wrote nice comment to moderators to check whole thread because it is full of shitposters. There is very simple solution to stop them, either to put merit requirement to reach junior member rank as many suggested before, not to allow newbies to post in altcoin announcement board or as someone suggested in meta to force them to solve recaptcha, but last one won't make any difference if they are bots because I believe there is a way to bypass recaptcha(I've seen this on faucets, some of them were drained within few minutes no matter there was recaptcha).