I can only assume there's some widespread misconceptions over quite what flagged-revs does - perhaps figuring out a way to specifically target these would be a good way to get more people on board.
A set of demonstration pages, showing what flaggedrevs would show compared to what sprotection would, perhaps?
What's needed is a really clear explanation which does not use arcane words such as "flagging" or "sighting".
—Thomas Larsen