What is Meta Name?

Meta Name are used to be searchable for the spider of the search engine. It's really important to pick the right keywords for each page and the best description for each page.
Take into account that the keywords must go from the most important to the less one. The spider are crawling so fast that most of the time they do not take care about the
I found I short video on About.com to explain in couple words what is it and how you could use it.