Online Advertising: Which kind of sites get Maximum Ad revenue

If you are looking at internet for opening a startup then you really got to look at this chart which will tell you why all the internet majors spend so much time promoting their emails and this will also tell you where does ad revenue go on the internet and no its not all Google. This chart via emarketeer reports according to Nielsen Online that E-mail sites such as Hotmail and Gmail accounted for the largest share of ad revenue in USA and this was followed by General and national newspaper sites and then by large portals and search engines. while community websites and social networks are fifth in the online advertising race. Now these trends in online advertising are from USA but are quite relevant to project what future online advertising scene could be in India.
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