I've created a promotion and a new user group today, the "Established Member" usergroup. In addition to some added privileges (namely the ability to start threads in the Marketplace), you get the new badge and some extra perks.
To become an "Established Member" you must meet two simple criteria:
- Member for 30 days or longer
- 25 posts or more
- Reputation of 10 or higher (you begin with 10).