This is a terrific volunteer opportunity for anyone who cares about knowledge in the public interest or online collaboration.  The following is my redaction of the publicity blurb:

Wikimania 2006, the 2nd annual international meetup and conference of the Wikimedia Foundation, will be held August 4-6th, 2006, on the Harvard Law School campus in Cambridge, Massachusetts.

The conference will feature presentations from Jimmy Wales, Larry Lessig, Brewster Kahle, Eben Moglen, Yochai Benkler, and Clay Shirky; along with some of the most active contributors to Wikipedia, Wiktionary, Wikisource, and the MediaWiki platform.  Presenters and attendees will discuss the present and future of Wikimedia Projects; the dynamics of Wikipedia and related communities; publishing and verification of information; and technical updates and Mediawiki hacking.

Wikimania will be a chance to meet the people behind one of the extraordinary successes of the internet - a multilingual volunteer community of a hundred thousand people who are passionate about creating high-quality free knowledge for the world.  For community members, it will be a chance to meet fellow Wikimedians, learn about what's happening today, and discuss current issues and the future of the projects.

For others, Wikimania 2006 will be a once-in-a-lifetime chance to participate in shaping the future of Wikipedia and collaborative knowledge production generally.

All sorts of volunteers are needed.  If you're interested in getting involved, please go to the Wikimania 2006 Volunteer Teams web page, or send at email to wikimania-info @ wikimedia . org.