i think it's important to protect new cryptocurrency fans on some information like dead and inactive coins as every day new coins are pumping into blockchain market.
here this link will help you identify many dead and inactive coins, so you can avoid being losing your funds
https://deadcoins.com and anyone have more to be added can let us know.
In Russian slang such coins are called "щиткoины". I fully agree that it is better to stay away from such coins, but in due time, I earned a lot of money on such coins