In case I recruit some one as my referral, how do I know they are active or not in OC?
good question, I think now there is no specific way to look at it. but you could tell from the added points for each of your referral
You can look at their profiles, if their points are growing every day, it can be said they are active in OC
Perhaps you can see through to your friends profile just looking growth of points but if your friends is really active it easy to check the contribution form this site