There was many scam ICOs programs and investors has lost money by investing in those project and that's why twitter and facebook have stopped advertisements for ICOs projects. I think what is happening is good for cryptos in the long run because if this scamming thing continues then most investors will lose the trust on cryptos and finally no one may invest in it. Let's market find it bottom and start the new upwards then we see more stable growth but it may take more time.