Basically, I think a good way to encourage members of the site to read more political theory would be to put some kind of marker on their profile or next to their name that shows how much and what kinds of political theory they have read. I also hope this would have the secondary effect of allowing lurkers who see disagreements to get a better feel of which side has a stronger basis for their position.
Maybe something simple like marking which accounts participate in the weekly reading series, and make it a riff on challenge coins or something.
Edit: I should specify that it would be awarded to people that are participating in discussion groups and such as a way to signify who is involved in the education side of the community.
Edit 2: Fuck It, I have been convinced that this is a bad idea. Instead how about a weekly what are you reading thread?
I dunno, maybe just skim through posts and comments with an eye for unfamiliar account names saying dodgy stuff, engaging with it seriously to point out applicable theory and where their comment/post is lacking.
I kinda dig making a snarky comment and somebody's response a serious analysis/critique of whatever I was non-seriously commenting on.
I honestly wish I had time to do this more often but I'm currently in the middle of writing my thesis. This post was more a random thought that came up during research today.