O’Reilly is offering a Web 2.0 Expo Hall Only Pass for FREE ($100 savings) for a limited time. To get discount, use the coupon code: websf11pre at checkout.

An Expo Hall Only Pass gets you access to all keynotes, all sessions in the sponsored sessions track, the Expo hall and all events held there, and the Web 2.0 Solutions Theater. The Web 2.0 Expo takes place at Moscone West in San Francisco and runs from March 28-31, 2011.