Which is best position to place ads on the site?

[satbir]

There is always debate where to place ads so that more people see that and use it. Also it is not obstructive also.

[Swiblet]

On the right sidebar, it's unobtrusive and can easily be seen. The left sidebar is for menus, and the header is for graphics or more menus...so right sidebar is best for me ^^

~~B3N

[QuwenQ]

I voted "Header" simply because you asked the BEST place to put ads. Ads that are immediately above your content and below the navigation get the best revenue.

[Christopher]

I like the right sidebar.
People see it and it doesn't look out of place. They usually fit right in.