Time will tell what these new trend of telegram mining apps will bring, whether it'll be increased adoption for cryptocurrency or devaluation of it. But I think that because of the success of NOTCOIN, many people are rushing into cryptocurrency via these mining apps. Most of then don't even know about the many scams that are in the crypto space, they think that all of them will give guaranteed airdrops reward like Notcoin. This misconception will give room for many of these ignorant people to be scammed and they will end up labeling cryptocurrency as scam. The trend has tremendous increased crypto awareness but I doubt that it will last, especially if they don't live up to the Notcoin expectations.