Whilst I'm not blaming the creator, these sort of services annoy the fuck out of me.. I hate following them and getting an instant DM saying 'thanks for following, checkout my blog' I almost always unfollow, it's really impersonal, same with with people that thank automatically every follow by putting Thanks for the follow @username, meaning everyone who follows that accounts see's every message (unlike @username thanks for the follow! which is still automated and a bit shitty but doesn't annoy everyone)