Most Popular IAB Sizes?

[rileypool]

Does anybody have real data on the most popular IAB sizes?

I'm assuming the 300x250, 728x90 and 160x600 have the most volume. Then I'm guessing 120x600 and 468x60 would be next. But what about after that? Anybody have any ideas, theories or hard data?

 

[cardine]

336x280 is listed as one of the "recommended" sizes in Adsense so I'd assume that means it also has a lot of volume.

 

[OJQJeff]

Ya for adsense 336x280 is highest CTR in my experience. In terms of volume, I would assume its 300x250 based on the number of websites that are designed to utilize this banner size.

 

[MrBradshaw]

Here's another vote for 336x280

It's the hands down winner.