This morning, I was checking my old emails then I found a useful email from a Web Designer colleague about so interesting topic Bannar Standards .Here is the Email
Most of us may not imagine that a thing as little as banners has standards when it comes to width and height and their place in content, i admit, i myself never imagined, not until I became a web designer :). what make this fact more interesting, is that these standards are based on studies in marketing, visual communication and usability, which make it an art and practice more than . Let me not talk so much, first link for the standard sizes,
http://www.bannercreator.nu/banner-size.html
The second about banner advertising history
http://en.wikipedia.org/wiki/Web_banner
Third, for an e-business specialized only in banners, try to change options of order, especially frames to see how much does it cost 😉
Thanks a lot my colleague, it is very nice article