again just in the beginning of the month there are some who like to cheat Vote. I tried to vote today and the page told me that I had already voted on a other server today. I been complaining several times about this. it is no fun there are players who vote other players away for that $25 in-game price.
I don't know of any ways to abuse the current voting system, so not sure what you mean by this. Also be aware that sometimes the voting says claims you already voted even if you didn't. This is not an issue on MCC's side. Your best bet is to try again with the same IGN but under a different IP address.
I don't know if this is the same problem or not, but I always vote in early european morning, which at the end of the month means my vote count of the day still counts in the previous month. As much as I'd love the free giftcard, I've excepted that I'm just never gonna get it, but either way I love seeing my name at the very top of the leaderboard every day, so my first votes counting in for the wrong month disrupts it.
