This upvote exchange is doing very good and I'm getting very excited about this. This site now has 1518 users and is growing fast.
I'm expecting for the service to become very fast when we reach 3,000 members, which won't take too long. This is very good for minnows because you upvote posts you like and you will get some pending upvote amount.
That means that other users will upvote your last post until that pending upvote is used up. I'm very happy with this so far and the developer is very active with his updates and listens to the user's requests. If you want to check it out and get more upvotes to your posts check it out by clicking here.