I've invested in a couple of ICO's, luckily it wasn't too much money,lol..even those projects that seem to sale millions of their tokens during their ICO , turned out to really suck when getting on the exchanges. Seems like the team that makes the most during their ICO doesn't put in anymore effort in promoting/upgrading their project when getting on the exchanges. Safer to buy the tokens when they just been listed on an exchange. My opinion.