It is interesting to explore online communities or groups. I have always been wary about joining such groups, afraid of the unknown. Beyond my own little circle of friends, I have not participated in any online discussions. This week I had to look for a group that I could genuinely stand to gain from and to which I could contribute.   At first I tried the groups on LinkedIn (another first for me this week) and I did put in requests to join two groups, one of which is a group for alumni of the university I graduated from. As of this time, I have not heard back from the administrators of the groups. So I tried to go around the instruction to join public groups versus closed ones - did not get me very far...yet. Maybe they will when they do respond to me.   For purposes of compliance with SMM class requirement, I just jumped in and joined two very different groups: the first was Spark People, an online community that I have actually been following for a while, but mostly as a spectator ...