It's a token for an upcoming game called Holozing, you can check out the link in her post to read more about the game. For now the game is still in the alpha stage but then it needs more people to support it for it to work better and even though you are not a gamer, you can be earning passively by just delegating some hive power to the zingtoken account, holding posh tokens and also from adding some zing to liquidity.