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.
Unlike other coins, POS doesn't have to be mined using electricity. That's why it is much environmental. I hope more activities will drive more demand for this coin.