http://commons.wikimedia.org/wiki/Commons:BLP_overwrites
A quick reminder about this report which helps vandalism patrollers for the English Wikipedia spot when images used in Wikipedia biographies are being overwritten by "newbie" accounts. I recommend more admins add the report to their watch-list. It is not too much of a pest, as in a day it tends to change between 4 to 10 times with normally only 1 or 2 new images being added.
The report has been running continuously on Labs for 5 months, changes being added to the on-wiki report within 5 minutes of upload. In that time there has not been another "revenge porn" type attack. Commons remains open for contributors to overwrite images and vandalism can happen. Based on this report a number of less desirable image overwrites have been promptly spotted and reverted, mostly with the only action being an explanation to the uploader of the the Commons overwriting policy as they were acting in good-faith.[1]
I consider the report useful and very stable, the only recent change being to filter out svg format images as this was adding a lot of flags and symbols used in BLPs that have not been an issue to date. The most active Commons patrollers I have noticed taking action on reported images being Deniss and Mattbuck; so hats off to them for lots of useful admin work. :-)
If there are other Wikipedias that may benefit from a similar report, please drop me a note on Commons or email me.
P.S. If haphazard copyright violations being uploaded from Flickr have worried you, then you may enjoy taking a look at my "Flickrstreams of concern" report which has a more than 50% hit rate for identifying problem sources that may need to be black-listed.[2]
Links: 1. http://commons.wikimedia.org/wiki/Commons:Overwriting_existing_files 2. http://commons.wikimedia.org/wiki/User:Faebot/Flickrstreams_of_concern
Cheers, Fae