[tstonez]

Sounds like nReduce.com but don't think it worked out. Agree with gaborcselle that bonding would not be the same without meeting in person. Also cohort effects are diminished with smaller rolling cohorts. Starting and finishing something at the same time is a big deal.

Think about your best friends. I would hazard a guess they are probably from school and college. Now compare to friends you've made taking MOOCs (i.e., remote) and at work (i.e., rolling cohorts). Over simplified but you get the idea.