my site talks about medical and health issues.someone offered me to install banner of his shop at bottom of my pages.I have 10 k daily. most of them visit my forum. I have not had any advertisements at my pages as yet. I want to know as an example if we have 100 impressions at highest position how many impressions I have at bottom?
Anywhere on a page have same number of impressions. Regardless its top or bottom. But. Lot of times people may quit the page before it finish loading. In that case the bottom might not get counted. I seen that kind of thing at some ad networks which makes the header have more impressions then the footer.
oh sorry I wanted to ask about what is the difference between clicking of header and footer?for example if I have 10k daily visits per day footer will have how many clicks? and the shop will have how many customers? does it possible to guess?
its not exactly impossible, but if you can get a pretty good idea if you check the zones for statistics where clicks are hot with google analytics. Some sites thrive on the footer while others on the header. It really depends on site design.