Thread:Google566/@comment-178.62.29.36-20190708101411/@comment-4899793-20190708110458

VSTF stands for Volunteer Spam Task Force who, as the name suggests tackle vandalism and spam across the site. You can read more about them here.

Sockpuppets are alternate/duplicate accounts created to cause disruption or wreak havoc on wikis. Obviously, to tackle them the VSTF is called.