The Blog Authorship Corpus consists of the collected posts of 19,320 bloggers gathered from blogger.com in August 2004. The corpus incorporates a total of 681,288 posts and over 140 million words - or approximately 35 posts and 7250 words per person.
Aman Shakya, Hideaki Takeda, Vilas Wuwongse, and Ikki Ohmukai. Proceedings of the IADIS International Conference WWW/Internet 2007, 1, page 371-380. Vila Real, Portugal, International Association for Development of the Information Society, IADIS Press, (October 2007)