At the moment only one achievement badge is shown on your info screen, and it's always your latest one.
What if you've been working on a certain achievement for a long time, and want to show it off for everyone to see? As you complete more achievements and get more badges the ones that you actually like get lost in the flood.
Like how we can display trophies in our house, I'd like a badge feature that lets us choose 5 badges to display on our info page. Of course, we can always go to a player's profile page and see all of their achievements, but this way you'll be able to show off the achievements that you want. Let everyone see how good at Glitch you are!
Of course, it could also be used to communicate the various ways you play Glitch and represent certain personality traits. Traveled the world? Love animals? Got currants? Social butterfly? Show it with your badges!