Age

Domain age, page age, user account age, and related historical data is sometimes taken into account when determining how much to trust that a particular person, website, page, or document. Generally, older domains are more trusted and therefore deemed more authoritative. However, sometimes search engines, like blog search engines, may boost the relevancy of newer documents.

Sometimes, fresh content may temporarily rank better than you might expect, because of citations from other channels which place the content or article on their home page or a well trusted (high PageRank) page on their site. After those sites publish more content and the referenced page falls deeper into their archives, those links typically become less authoritative causing a drop in rank.

Also see: Supplemental Index [link: ]

Affiliate Marketing

Affiliate marketing programs allows merchants to expand their market reach and mindshare by paying independent agents on a cost per action (CPA) basis. Affiliates only get paid if visitors complete an action.

Most affiliates make next to nothing because they are not aggressive marketers, have no real focus, fall for wasting money on instant wealth programs that lead them to buying a bunch of unneeded garbage via other’s affiliate links, and do not attempt to create any real value.

Some power affiliates make hundreds of thousands or millions of dollars per year because they are heavily focused on automation and/or tap large traffic streams. Typically niche affiliate sites make more per unit effort than overtly broad ones because they are easier to focus (and thus have a higher conversion rate).

AdWords

Google’s CPC (Cost Per Click) based text advertising. AdWords takes clickthrough rate into consideration in addition to advertiser?s bid to determine the ad?s relative position within the paid search results. Google applies such a weighting factor in order to feature those paid search results that more popular and thus presumably more relevant and useful. Google has also started taking into account the quality of the landing page and applying a quality score to the landing pages.

AdSense

Google AdSense is a fast and easy way for website publishers of all sizes to display relevant Google ads on their website’s content pages and earn money. Because the ads are related to what your visitors are looking for on your site or matched to the characteristics and interests of the visitors your content attracts you’ll finally have a way to both monetize and enhance your content pages.

It’s also a way for website publishers to provide Google web and site search to their visitors, and to earn money by displaying Google ads on the search results pages.

Accessibility

Accessibility is the practice of making websites usable by disabled people – especially blind people.

Because search engines are essentially blind (ie they can’t see pictures or use Flash) accessible websites tend to have better search engine rankings than inaccessible websites.