W4A 2011 sponsors are supporters who have committed to sponsor the conference for this year. We'd really like to acknowledge our sponsors, without them the W4A would not exist. The sponsorship is mainly required to cover costs associated with the printing and shipping of conference proceedings (both in paper and electronic form). We also us it to waive the conference registration of our keynote speakers. Finally, a small amount from the sponsorship is used for conference expenses (stationary, printing of programs, this website, etc.).