Theory about concept of audience

These days I am reading and writing theory about imaginary audiences.
One scholar, I am especially inspired by is danah boyd. She has written and co-written two fantastic articles about interaction on social networking sites (Twitter and Myspace) where she touches upon the subject imaginary audiences.

You can read them here:

Why youth heart social network sites

I tweet honestly, I tweet passionately: Twitter users, Context Collapse, and the Imagined Audience.