From Wikimedia Commons, the free media repository
|This user account is a pywiki-based bot operated by nl74 (talk). A bot to maintain only own images (uploaded by the operator), first task would be to add a new category to 50 uploaded images using category.py, max. 2 modifications/minute, manually assisted
It is not a sock puppet, but rather an automated or semi-automated account for making repetitive edits that would be extremely tedious to do manually.