Ad Placements

The very basic thing In adsense as being publisher (one who put google ads in his website or blog to earn money) is the ad placement of Google Ad in your website or blog.
Am here to tell you some basic and and very usefull tips 'n' tricks about these ads. This thing make you at the top or sink you at the very bottom, no matter how much your doing hardwork to upraise your internet earning.
Well you can take an example of big billboard and banners placing at the top of the building facing the buzy road, when we pass through this raod and saw the big billboards advertising some products, when we saw it, we notice that product and buy 1 for home purpose or depends upon the product same as correct placement of ad in our web site is must and when visitor noticed it, it clicks the ad.
Imagine your self as a visitor and visit your page and notice the very 1st place you see, according to me and my experience the visitor 1st look at the very top centre page then look left then search content So the best ad placement is:
CentreLeft partThen Body content
So by looking at this content we should place ads at these place, But the question arises here what type of ad should we place?and the answer is:
You should attract the visitors 1st sight, and for this sake Only image ads fullfill this criteria because images ads are really colorfull than simple text ads, So describing my experience here every one should place:
728by90 image-ad at the top centre, below your web banner and below your search box
160by60 text-ad at left top-rite after 728by90 banner ad, if u have a navigation bar at left then put after it like it do in few pages,
put 336by90 image/text ad in center or when your content ends.
i know you all have a question that why i put 200by200 image ad at the top instead of putting 728by90 image ad? Well 1st is if i put 728by90 over there then my page design will effect and bad effect made bad impression and second thing is that am still in a case study or in an experimenting process.. i weekly change my ad placement for better Clicks :)