Images only at the bottom

[plasma]

When I write an article (2-3 screens tall) I usually put a block after the first paragraph, one in the middle and one at the bottom. All of them are of type "text_image".
However, only the bottom one will occasionally show an image ad.

Why does Google put the images only at the bottom? Shouldn't it give much higher CTRs?
Would you recommend forcing the top ad to be an image?

[celgins]

Why does Google put the images only at the bottom?

Not sure. If your Adsense for that particular block is set to "text/image", then it's possible that images do appear there from time to time.

Shouldn't it give much higher CTRs?

Not necessarily. There still is such a thing called "ad-blindness" and I believe it is more prevalent with images than with contextual ads.

Would you recommend forcing the top ad to be an image?

That would have to be a judgement called based on your site, visitor movement, type of content, etc.

While I wouldn't place an image ad above an article, I do often place affiliate 250x250 blocks in the middle of an article (positioned to the left).

However, if you strictly specify AS image ads, you might find less ad inventory than on the text side.

[plasma]

Ok, now I know, why images are so seldom.
I forced image ads and it gave 0.03$ Ó_ò

[plasma]

Honestly, there should be a configurable minimum that ads must pay.
I'd rather show Unicef ads to my visitors than annoying them for 3 cents!

[jason207]

yeah but 3 cents multiplied by 10k or 20k etc clicks start to add up

[celgins]

Many image ads are CPM-based.

[plasma]

My sites have only few visitors, but CTR is ok, and CPC is usually quite high.
For CPM and low CPC I have far too few visitors.