Aging delay. Term describing a set of filters applied to new websites whereby the site cannot rank well (or at all) for any competitive keywords for 6 - 24 months. Also called the Sandbox. Algo, Algorithm. A specific mathematical process for achieving a desired result. Google uses a proprietary algorithm that contains over 100 different criteria to rank Web sites in a specific order based on a specific search request. Algorithmic listing. Any search engine listing that is on the “free†or unpaid section of a search results page. These listings are obtained using SEO techniques without the use of paid advertising. Also called organic, natural or editorial listing. Anchor text. The clickable portion of text displayed (usually as blue, underlined text) for a link. Also known as link text. Authority. Site with a high number of incoming links and a relatively low number of outgoing links. Opposite of hub. Backlinks, backward links. Links from other sites that point to your site. Also known as inbound or incoming links. Cascading Style Sheet (CSS). Code that defines the visual appearance, style (size, color, font), or positioning of text on a Web page. This code can be located either on the page it is used on or can be stored in a separate (.css) file. Conversion rate. The percentage of visitors to a website that end up performing a specific action that leads to a sale. Such actions can include the purchase of a More that types of terms you found at : http://seogurutips.blogspot.com