Wygląda na to że Google testuje nowe metody oznaczania reklam:


——–
aktualizacja
wygląd obrazka oznaczającego reklamę google zmienia się np w poniższym przykładzie na czarny:

———aktualizacja
Odpowiedź od Google w tej sprawie
Thanks for your email – as you’ve mentioned, the change that you saw was part of ongoing testing to improve our ad formats. Such variations are a normal part of our testing process and generally run for short periods of time only. No permanent changes are planned at this time.
To maintain the integrity of ongoing testing, we do not permit publishers to opt out. However, please rest assured that such variations should impact only a very small percentage of your impressions.
We appreciate your patience and understanding as we work to improve our program.
Sincerely,
Stephanie
The Google AdSense Team