Over the past 4-5 days, the amount of people not seeing any ads at all has increased dramatically. I show Adsense to US visitors as I only serve UK customers with my site.
Is there something going on in the states just now that I don't know about? Are a bunch of companies not advertising at the moment? (broadband and insurance)
3% average unmatched to 59% unmatched ad requests has to indicate something?!?!