Going back to our example of Acme Manufacturing. We could make a description tag that reads as follows: "Acme Manufacturing is the largest producer of electric widgets in California, providing round the clock service and warrantees on all products." This description contains the keywords again and also says something about the company.
Some guidelines for description length recommend a maximum length of 250 characters. Once again there is no precision about this, but it is good to be cautious until you are already entered into a search engine's index.
The last of the important meta tags relevant to search engine optimization is the keywords tag. In this tag you have a chance to list your important keywords, but this time they do not have to be in a coherent phrase as in the Title and Description. Put your important keywords near the beginning. Make sure that all the keywords used in the title and the description tags are again listed. On top of that, add prominent keywords, especially those that appear in the actual text of the page you are optimizing Cigarettes Online Free Shipping. For the Acme Manufacturing company we could have these keywords: "widgets, widget, electric widgets, California, widgets in California, Acme Manufacturing, service, warranty, warranties"