It's not new. It's been part of vbulletin for as long as I can remember (nearly 10 years, I think). I think you're just noticing it because the rating graphic somehow became a bit screwed up recently. The graphic is usually less intrusive.
It's only active on the Pathfinder forum and New Horizons. And I am sure it wasn't active on the Pathfinder forum before.It's not new.