Most frequently mentioned twitter users in tweets containing one of: "#pdftribute" between Jan. 17, 2013, 3:43 p.m. and Jan. 31, 2013, 3:43 p.m.

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  • 1876 mentions between Jan. 17, 2013, 3:43 p.m.
  • and the end of the race at Jan. 31, 2013, 3:43 p.m.