2009/8/28 Anthony wikimail@inbox.org:
He means what would you measure in order to draw conclusions about the severity of vandalism.
Umm...you would count the number of instances of vandalism?
That's not practical. That would require a person to go through article histories revision by revision, probably multiple people per article to check they agreed on what was vandalism. It won't work for the kind of sample sizes required unless you get an army of volunteers. We need something that we expect to strongly correlate with the number of instances of vandalism but is easier to measure - that is what "revisions with revert/rvv/etc. in the edit summary" was intended to be.