I've got =10 currently open in a separate tab (won't be closing it for the time being so I can take a screenshot if needed)... and the banner ad is, unsurprisingly (considering the thread title), Google ads.
Unfortunately, guess who has the only ads that ever seem to come up when the Google ad service is passed "FFXI"? That's right, it's gil sellers. Several pages' worth of their ads. (Out of the first five pages' worth of four ads, 17 are gil sellers, one is Direct2Drive, and two are for other MMOs.)
I'd recommend just having Google ads removed from the possible rotation in all FFXI-related forums, because of this.