BarackObama followers

Twitter User BarackObama has an incredible amount of followers. This Twitter account follows every Twitter user that follows BarackObama. Currently Twitter User BarackObama is following over 100,000 other Twitter users. A rough estimation of the number of Twitter messages per day per users can be made of two sources. Twiturly scans between 200,000 and 250,000 Twitter messages per day, TwitDir reports 3.18 million Twitters users. This leads to the following calculations.

Number of Twitter Users (TwitDir) : 3,183,544
Daily Twitter messages (Twiturly) : 200,000 - 250,000
Number of Twitter messages per day and user : 0,063 - 0,079 
BarackObama followers : 101.350 
Twitter messages from BarackObama followers per day : 6.367 - 7.959
Twitter messages from BarackObama followers per hour : 265 - 332
Twitter messages from BarackObama followers per minute : 4.4 - 5.5

It seems quite unlikely that Barack Obama himself would read all these Twitter messages. I even doubt it that a single person is capable of reading all these messages (5 per minute, 24 hours per day).