This number of factual errors in such a short story is amazing:

1. The total number of daily tweets is well over 100M (not 10M)

2. The 10% sampling corresponds to the gardenhose access level, and I'm seeing over 15M tweets going through "Truthy" every day.

3. Johan and Xiao-Jun are professors, not a students.

4. Johan, Huina are at IU, not Cornell

5. Xiao-Jun is in Manchester, not Cornell