I'm (or was..) a user of Minnowbooster service, but recent events got me thinking if we really need of upvote bots like @minnowbooster or other upvote bots.
The unconsidered use of them, create a gap between new users and rich one.. "minnowbooster withelist" is the proof. Trending posts and hot posts are fullfilled by user that can access to this service... something goes wrong. Money win over quality...
This post written by @acidyo:
https://steemit.com/curation/@acidyo/pre-ann-ocd-bot
is a very interesting read...