The Iranian Election on Twitter:

The First Eighteen Days

Key Findings

From 7 June 2009 until the time of publication
(26 June 2009), we have recorded 2,024,166
tweets about the election in Iran.
Approximately 480,000 users have contributed
to this conversation alone.
59.3% of users tweet just once, and these users
contribute 14.1% of the total number.
The top 10% of users in our study account for
65.5% of total [...]