OFLover - 2:22 pm on May 2, 2010 (gmt 0)
I think it's difficult to ascertain which is more important, what the adsence unit looks like, or where it is actually positioned on the page. I would actually say that positioning is probably slightly more important than what it looks like. Up until fairly recently I had one 468 x 60 banner at the top of the page just above the content and heading. Another 160 x 600 skyscraper unit on the right-hand side underneath the menu, and finally a 336 x 280 you do it right the bottom just under the content. I have now rearranged the ads making the unit above the main content 300 x 250 , have moved the side menu from the right to the left hand side of the page and have positions the skyscraper unit above the menu so it's positioned in the top left. I've left the bottom where it is. This seems to have made a huge difference to my click rate.
Like some of you have said on here blending everything in making it look in all intents part of your content seems to have made a huge difference. I have certainly doubled my daily income, sometimes I am actually getting treble the amount I was only a couple of months ago. Having said all of this you're never going to add any money if you're not getting plenty of hits on your website, unless of course your particular ads and you loads of money for just one click. But like most of us they really don't earn you much more than a few pence for each click. I'm generating around about 1200 unique visitors each day and I'm earning an average of just over £100 each month, that is the actual money I received from Google. I'm still tweaking things so I hope that this figure will increase in time. But if your site doesn't get many hits, don't expect to earn much money.
Just my two cents