Yep. Worth it ;-)
Last week I got one of those scareware fake virus-scanner bugs. Had a devil of a time getting rid of it. And here I am right back on the same interwebby that infected me!
It happened just now, at Google images. That place is a rat hole of viruses and scams.
Clicked an image and a red screen comes up MOZILLA HAS FOUND...! CLICK HERE! I did so and as it was "scanning"
I reconsidered it the same scam under the guise of Mozilla and cut it off. AVG has scanned over 1,000,000 objects and so far I'm clean.
and no it wasn't porn, I was looking for a fairy gif for another comment ETA: Scan complete, 0 problems.
note: Whether it appears as a new page or a pop up it looks very legitimate.