Sorry guys but it looked as bots / proxies etc. Too many votes in such small period of time. I was afraid that they will take GRUMP down from voting list. Similar thing happened to other coins on MintPal. They will bring us back after some time and probably after removing most of the votes. It's a pity because many of us (including myself) voted several times a day.
Someone wanted to take shortcut.. Didn't work out.
In the end it is all about the money. MintPal wants to be paid for adding coins to their exchange. And to be honest there is nothing worng about it.
Please don't use bots, we can spot it and you will be seriously harming the coin's chance of ever hitting our exchange. We will temporarily remove any coins that have gained votes with bots.