I run adsense on my website since almost 3 months, and i realized that in those days i changed ad layout i got more clicks. So my question is : is it good to change ad layout every week (perhaps even at 2-3 days distance) ?!
All websites go through revisions. Most sites go through 3 or 4 layouts before finally settling on one that they really like. You can always analyze your CTR for each layout and see which performs the best and then just keep that one. You also have to consider your traffic. If the majority of the traffic you're getting is new visitors than it shouldn't matter too much if you change the layout every 2-3 days, but if your site has mostly repeat visitors, then constantly changing the appearance could be quite annoying to them. I think you would be better off spending your time adding new and original content to your site rather than spending all that time creating a different layout every couple of days.
brain has said it alll, but buddy, do remember to use channel for the every adsense placed in different location and don't change the layout too often. notice the user behaviour and then come to a conclusion.
I have too many pages to change them regularly. I do think if I changed the ads say weekly I could possibly increase my CTR but I prefer to spend the time adding new content instead. More articles = more visitors = more clicks. IMO. Create a good site, with quality content & you will get the clicks. I personally think it's all aobut getting as many visitors to your site as possible, and that means adding content.
i use a cms so changing adsense code isn`t a problem. After one week with the ad on the same place and same layoyt clicks start to decrease. that`s why i have to change them. most of my visitors came to my page for a image gallery so there`s no much text content to add . but thanks for tips . i think i will try to stay with one layout more that 1-2 weeks just to see what happends. cheers