One of the best reviews of this small ,but very important part of the eco-system subscription based upvote bots that has sprung up on SteemIt! @phelimint thanks for posting it. I'd like to add some to it and agree on behalf of the @moonbot community!

Simplicity
This is one of my favorites, is that it's just simpler. You just send you payments and the vote starts rolling in on your posts, no need to drop links anywhere or send any additional wallet transactions. It can save you some time and hassles on a daily basis.

I couldn't agree more.No messy link spam , or having to find a bid-bot to vote on. Just do what you love to do write and get upvoted automatically. This is a huge advantage with subscription based upvote bots. Your time.

Creating community and curating content
I think this is an important aspect of steemit to create community and connections between people. Most of these bots have a discord channel where people can meet and connect and often friendships are made. Many of these bots also have daily or weekly content curation when they share some of the posts and/or resteem some posts to help promote good content on steemit.

I couldn't agree more. Our theme for our service is based on the famous saying, "To The Moon!" - in doing so , our discord has become a warm and welcoming and fun place to hang out! We recently, invited @kiwibot & @cryptowithincin to our discord as some might think we are competitors ,but in reality we are a tight knit group just trying to improve the user experience of Steemians!

One other thing we'd like to add people love seeing some sort of activity as a new user on this platform. Even if it's a .10 cent upvote every day on the posts they make. It makes people feel someone is watching and paying attention and we've seen them coming back. I believe this is a good rention helper for the platform too.