I learned a lot from DP and here's my contribution to DP. For 6 months , I'm using the basic forum technique like - leaderboard on the top - leaderboard after 1st topic - leaderboard on the bottom In a single page I display 3 banners but on forum it's will a waste because the click ratio is so poor. Last 2 weeks I've read some tips in DP about using Large Rectangle have high CTR. In no time I implement double rectangle and remove ads from topics and footer pages. So instead showing 3 banners, on the new technique I only show 2 and put it directly below navigational link. Instantly , the CTR went up from 0.2 to region of 0.6 and 0.7..and clicks have improved from 70/80 to 90/100 per day. I've doing some research, banner on the left priced much-much higher from the right if the clicks are same. This tips is for forum only ( as I tested myself using SMF )
Thats quite a substantial increase as a result of simple optimization techniques. This is another example of fewer ads having higher CTR.
This is to be expected, because AdSense ads get filled in starting with the highest paying ads in the first ad block (on the left), while the second ad block (on the right) will get lower paying ads. Some people rearrange their ads blocks with CSS so that the highest paying ads are in the most profitable position. Cryo.
Cryogenius Thanks for the tip. Never think of that, reposition AD using CSS-P. That's is something cool. I never think of that. Thanks anyway.
You may have to change the placement once in a while. I find the clicks go down after a while cos the forum members begin to know where not to click.