ZeitGeist:
This means world / Time spirit : This word indicate the spirit of what people are doing around the world.In the SEO world this can be of great significance, if we use it peoperly . Google acutally publishes this. This will give us a a fair idea of what people are looking for. Be it a personal site or a eCommerce site , this can point your business/ webiste in the right direction.
Check it out at
http://www.google.com/press/zeitgeist2006.html
Use this free tip to optimize your site . And if you like this , please set a link pointing to this page.