A History Of Tweets

I was intrigued by this decision:

"This is an entirely new addition to the historical record, the second-by-second history of ordinary people." FRED R. SHAPIRO, of the Yale Law School, on an agreement by the Library of Congress to archive Twitter messages.

This is an amazing concept -- that every electronic word you utter will contribute to a history of the world.

As an exercise:
How does your main character feel about Twitter? Do they tweet? If they had only 140 characters to say something, what would they say?