I use them sometimes. Of course, in the end you hope to build a group of followers/people you follow, so you can generate most votes organically. It's tough to gain traction, so I use them for more visibility sometimes. Yes, some people frown upon them, but it's certainly not against the rules. Just make sure you visit SteemBotTracker to spend your SBD wisely when you do use them -- otherwise, you can lose money and not gain it. Thanks for dropping in!