The IxDA's annual conference is sold out, but I thought I'd add it here for reference and to see who else is going from SF.

Main conference site:
http://interaction13.ixda.org/

Description:
Join us in Toronto, Canada's largest center for design, as the IxDA community unites for its 6th annual conference. Celebrate 10 years of interaction design to embark on a journey toward defining our role as guides through social interactions, digital and beyond. Inspire and be inspired at Interaction13 and make an impact on the social fabric of your community, organization, and society.