Your site name and site description are both important areas of your wiki settings. They both directly impact the way your site is listed and displayed in the search engines.
Site Name
Your site name is used to identify your site on the website, in invitation emails, links to this website and in the search engines.
For example, the Mythbusers wiki has used the site name, which follows the name of every page on the site in the search listings:
The best site names:
Are short (2-5 words in length) so they are easier to remember
Are informative and compelling
Use words that are relevant to your site
Are simple - using numbers or letters to replace words is hard to remember