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- 12:16, 17 April 2016 Matt Deres talk contribs was automatically updated from pending changes reviewer and rollbacker to pending changes reviewer, rollbacker and extended confirmed user
- 05:51, 16 June 2010 Julia W talk contribs changed group membership for Matt Deres from rollbacker to rollbacker and pending changes reviewer (rollbacker, trusted user, see WP:Reviewing)
- 20:30, 17 February 2008 Yamamoto Ichiro talk contribs changed group membership for Matt Deres from (none) to rollbacker (User has shown some experience and/or interest in anti-vandalism efforts)