Ads by "G"

Have you seen them?

[fischermx]

I just see one ad unit showing:

Ads by "G".

Where the "G" was a picture file with the Google G as it appears in the logo.

[engine]

Like the ones these folks spotted, or a different one?
[webmasterworld.com...]

[joelgreen]

Think it was a different one. I also saw Ads by "G logo" (without "Google" word, just "G" image instead of it). Seems like Google continues experimenting in order to make their ads distinguishable from other ads.

[FortySomething]

I've seen ads by G, a graphical ads by Google and am back to the old standard Goooooogle at the moment. Not sure it makes any difference to my stats.