From WikipediaSearch engine optimization (SEO) is the process of improving the visibility of a website or a web page in search engines via the "natural" or un-paid ("organic" or "algorithmic") search results. Other forms of search engine marketing (SEM) target paid listings. In general, the earlier (or higher on the page), and more frequently a site appears in the search results list, the more visitors it will receive from the search engine. SEO may target different kinds of search, including image search, local search, video search and industry-specific vertical search engines. This gives a website web presence.
Out of the box DotNetNuke has many characteristics that help with SEO, but there are some areas where some extra work will delivers benefits.
While you can target specific SEO at the Page level, DotNetNuke also provides Portal level options, allowing you to define default page Descriptions and Keywords from the Admin/Site Settings page.
Some of the features that DotNetNuke provides for SEO can be found at the Page level, they include the Page Title, Description and Keywords.
To see how many pages a search engine such as google has indexed on your site you can visit it (i.e. go to www.google.com) and trpe "site:www.domainname.com" and see how many results show up. You can also try "link:www.domainname.com" to see how many sites link to yours.
The following links contain valuable information for people looking to optimize their DotNetNuke sites for SEO.Converting existing websites
For users coming from an existing website, this article
has a number of good suggestions to resolve issues and retain site rank.