(apologies for duplication) Early registration is closing soon for WikiSym 2010 -- the sixth annual symposium on wikis and open collaboration, to be held this year in Gdansk, Poland. The symposium will feature a keynote by Cliff Lampe, research papers and panels about wikis and open collaboration, and an open space track for ongoing discussion. The conference will be held just before Wikimania 2010, the annual community conference of the Wikimedia Foundation, which will offer an opportunity for wiki researchers to meet and interact with Wikimedia community members. Early registration closes May 30. See: http://www.wikisym.org/ws2010/Registration for more information. Phoebe Ayers chair, WikiSym 2010 -- WikiSym 2010: July 7-9 | http://wikisym.org/ws2010