To be honest,some alts have a good beginning  but for some reason,people panick so  they dump so fast after they hit the exchange. I had one coin with huge prospects and when it hit exchange, it was worth one dollar. But few days later it has dumped so badly it's not even enough to buy a burger!  But I believe there are still some alts that are worth it cos the develooers do all they can to pump the coin. The problem is to identify such projects that strive to stay up despite the market fluctuations.