Aaah, that's the only reason I'd use the bot, cycling SBD and a more economical way to power up if they have a decent ROI.

I read that speedvoter has a decent ROI but that might have changed since they don't have a Steembottracker entry, as far as I know, and they also don't have a ROI hard limit, so someone could potentially give too much to the bot and everybody else would also lose their money.

As for their spamminess, depending on the place, it doesn't matter much. For example, here on Sydesjokes Faucets, people say whatever they want because it's a way to get money off the faucet. So if people use a bot or not, it's not that damaging.

But in a more serious environment, I do agree that they are not at all convenient. There are some bots that don't leave comments and have a decent ROI. I used one one day to help a buddy win a contest, lol. I gave it 0.025 and it upvoted the comment with 0.056, so it was very worth it. It's called @lightningbolt, doesn't leave comments and has a hard 0% ROI limit, so you won't be losing money if you use it properly.