Dave Winer, the Bloggercon mastermind is trying some different things for Bloggercon IV, including inviting other conferences to come be part of the conversation. Ryanne Hodson will be leading a discussion about video blogging and recapping Vloggercon. Chris Pirillo will be leading a discussion about putting users in charge as a preview to Gnomedex, and I will be representin' for BlogHer in a session entitled Building Bridges.