Imagine What Colleges Could Do With Gamification. Look at What Ford Does.

http://www.joakimnilsson.com/case-studies/how-ford-social-energized-their-core-customer-base-with-badges/

We could give badges by graduation year, major, giving societies, sports teams, residence halls, cities (e.g., Dallas Alumni badge), states, clubs, fraternities/sororities, and more. They could be shared across social media platforms.