Well - here is one that actually benefits people - Hive account@originalworks

There are others as well ; some check to make sure your content is original and not found anywhere else on the intnernet ; this is one such bot - it also sends an upvote ; although you may find one that will post without actually calling them - other bots are services ; in which you send a small amount of SBD and they will sometimes upvote your post, or resteem - ect .