I fully expect that at some point in the future that this will be integrated into a service through a website for non-technical users. They sign up, provide login details, we add a posting key with authority to upvote, and then users can choose their settings via a nice GUI.

As to the reason to use an autovote bot. You know accounts that provide good content, and you want to upvote them without having to go through each and every post and manually do so.