An idea
Imagine being able to make custom checkmarks with your own art and images and being able to assign them to your own followers on [tumblr].
They would probably be used to
- highlight a blog's co-creators
- keep track of the most loyal supporters
- goofs
- assign frogs of different colors to people
- more
Bloggers would proudly wear their badges like Russel from 'Up' and people could see their "Badge Mutuals", which are users with the same exact checkmarks.
Here's a diagram


