Hi, adsense has a new ad unit size 300x600 It can replace two 300x250 ad units that you have one above the other in your sidebar or within your content (with div float) So you replace the 2 300x250 ad units by this one, and you can then put another ad unit on your page somewhere else. At the moment this new size mainly displays lots of text ads, but there are also a few graphic ads using this size and for sure the advertizers will be jumping on this new format.
This ad unit is really good and have a good chance of clicks. but what about CPC, as it contains lots of ads will the CPC decrease? what's you experience DP? let me know
Yeah, it's called filmstrip and it's part of a new IAB banner sizes. You can check at the IAB site iab.net/guidelines/508676/508767/displayguidelines I hope to see the 970x250 very soon...
So far my friend have put it on two french sites and the problem was mainly that there aren't many images ads competing compared to 300x250, so the overall CPC is lower. The CTR was about the same as one 300x250. So he changed it back to a 300x250.
I think major problem with text ads. Most of the time it returning blank space which results in low CTR. In my view, it is best to use 2 300x250 units instead of 300x600.