Standard Banner Sizes Explained

When making banners to advertise your site or product, a common question is what banner size should I use?
If you are making a banner for a specific website, ask them what sizes and format they would like. But in general, here are the standard banner sizes:
Boxes:

Horizontal:
Vertical:
There are several other common sizes such [...]

Effective Ad Placement for More Advertisment Revenue

You have placed ads on your website, but they just aren’t generating revenue like you think they should. One factor that could be affecting your advertising effectiveness is the positioning of your ads on your site; some areas of a web page are simply more effective than others.
A whole area of scientific research is dedicated [...]