news: The general site news journal. Regular postings about major news and events happening on LiveJournal: new features, new options, and major happenings.
paidmembers: Information specific to paid members: sneak peeks at new features and special LJ-specific account offers.
lj_releases: A running list of all changes to the site, bugfixes and enhancements.
lj_ads: Messages from our Sales staff about Plus accounts, advertising, and sponsorships on LiveJournal.
lj_design: Messages from our Design staff about their role in creating new stuff: new themes, page layouts, and the "look and feel" of LJ.
lj_maintenance: Messages from our Operations staff about downtime -- planned or unplanned! -- and scheduled maintenance.
lj_feedback: A place for us to solicit opinions by posting polls, surveys, and questions.