Dunbar's corrollary essentially states that a person can only maintain a certain number of stable social relationships. Most often that number is cited as 150.
The question is ... is twitter (or other social media) perceived by our brains to be many relationships or one (combining many into one)?
In other words, when we go to twitter do we recognize each relationship as unique or do we interpret the collective tweets we receive as one voice with many different viewpoints?
I'd love to hear your thoughts on this ...