I think this is the first time a full XML dump of Citizendium is publicly available[1] (CZ offers dumps but only the last revision for each article[2], and our previously efforts generated corrupted and incomplete dumps). It contains 168,262 pages and 753,651 revisions (9 GB, 99 MB in 7z). I think it may be useful for researchers, including quality analysis.
It was generated using WikiTeam tools.[3] This is part of our task force to make backups of thousands of wikis around the Internet.[4]