@Haejin, there are people who are paid shills out there. I am afraid this @grumpycat may be one of them...There are people who have an interest in downvoting something that is so helpful to humanity. I am glad you spoke up to make us aware. It will be interesting to see how @grumpycat is actually making money with his votes. I hope @steemcleaners does investigate -Are they on behalf of the Steem Platform itself?