I've been communicating online since the days when Yahoo bought the eGroup/Onelist. The "me too" is fine, but ultimately, what does all these clicks entail in

I've been communicating online since the days when Yahoo bought the eGroup/Onelist. The "me too" is fine, but ultimately, what does all these clicks entail in a long run? Have they helped reduce the clutter and/or enhance the value of the conversation? What about the value of the commentator and his/her aggregate contribution? Do the number value provide any insight? Say that I may be an expert on Topic A, and I have gathered a whole lot of numbers (karma, or whatever else) due to my expertise on Topic A. What does that say to the reader, on my lack of expertise on Topic B, C, D? The "me too" does not actually add anything to the value and diversity of opinion (other than it adds to the group-think).