i tried it,i had my own account and i tried it,it said working,so i tried testing other account,found an account and it said working,tried it on minecraft.net said not wroking,it was abit weird,tried my account on the checker it said failed,tried my account on minecraft.net it said wrong password,This checkmate finds accounts and then sends it to him with a changed password!!!!
i lost my account because of you and now i need to reset my password..... scammer!!