smartsteem is good. The link is at the bottom of my post. 180 - 210% returns and you can send small amounts. minnowbooster.net is similar. Go to their site to see available buys. My favorite is ebargains because they resteem. Just send them 1.0 SBD and they upvote (about $2 STU) and resteem to thousands. I will be posting articles this week on how I think it is best to manage upvote bots, resteems, etc. Sorry for the delay.