GreenDog18 - 4:53 am on Feb 14, 2013 (gmt 0)
From what I understand when Google decides to show just one ad (not a PSA) in a bigger adsense box, this is called an expanded text ad.
How do I prevent this? (Yes, there are plenty of ads that could be shown)
When they do this it lowers my CTR and earnings. Plus, it looks horrible.