Never mind folks, this is just one in a larger group of bots.

Sara, you don't seem like a malicious or generally bad sort, so I have to warn you:
Stock comment phrases like "that's cool", "good post" and so forth can get your comments flagged and your Reputation Score will suffer as a result!
On STEEM, folks (particularly higher level steemians) pay attention to who they upvote -- because they have to "spend" some of their valuable resources each time.