Decoin is realy worth investing since they have thier own secured trading platform with 24/7 support and a POS system that entitles token holders to earn annual dividends from thier platform.
Pos system is very useful and in principle opens opportunities for investments for beginners. However there are many sad examples when coins with such algorithm lost the price and died. Therefore continuous improvement in process of existence of a coin is necessary.
I really hope this one improves more than the other coins developed if they are can maintain things and ensure stable sensible profit system then maybe it will have long term value eventually