Nice tips, Thanks Will!
Anyone else have any information about this?
Wheh, hard to believe its been a year since the last post on this thread!
Anyway, on one of my projects I was seeing a < 2% Adsense CTR in a niche that I should have been seeing > 3% from other related work and I was trying to figure out why.
Turns out, to be "cute" I had used a red colored theme (WP) that was almost identical to another seeing the higher CTR (same niche). I switched to a blue color base on the theme and changed the ads to match. CTR jumped to the expected 4 ish range. eCPM remained steady for both themes. No change in ad placement made and the CTR remains steady.
i was doing a mistake of keeping ad units on right widget... will move it to left... thanks.
Good thread and tips! From my experience the best performing ads are the ones that blend in (of course within adsense guidelines).
Also while blue is usually best, on sites where all your links have a different color, e.g. green - make your ad link green too.
There also exceptions from any rule, optimal ad layout may vary based on niche, site and audience, so test to find out the best performing one.
I decided to crank up my Adsense earnings. It was nice to read through this thread again.
For my latest web page I put 2 x 336x280 Ad units in the main content, a 468x90 text unit at the end of the page and a 728x90 link unit in the footer.
Also, I came across an interesting blog post about Ad unit sizes The Best Performing Banner Sizes for AdSense which is very interesting!
I agree about how blue themes are able to make visitors browse a little bit longer. Just recently I switched into that color and I have seen huge increase in my earnings.