Steemit200 is a bot account that occassionally frontruns a lot of the whales (along with badassmother wang and the recursive's sometimes). AFAICT, its not related to accounts like steemit1, steemit2, and steemit3, that are steemit inc's accounts.
If it voted for this poster, it most likely did so trying to frontrun smooth, but got bolloxed when smooth didn't show up to the party.