Getting indexed means to make different folders of different sections.Preventing Crawling means disabling unwanted content form the end user.Increasing Prominence means to include maximum links within the site and also out side the site. By including the most searched phrase or keyword in a search engine you can improve the visiblity of your web site.
Tagging A tag is a non-hierarchical keyword or term assigned to a piece of information (such as an Internet bookmark, digital image, or computer file). Tagging was popularized by websites associated with Web 2.0 and is an important feature of many Web 2.0 services.
Labeling and tagging are carried out to perform functions such as aiding in classification and indicating online identity. They may take the form of words, images, or other identifying marks.
In 2003 social bookmarking websites like Delicious, provided a way for its users to add “tags” Delicious also provided browseable aggregated views of the bookmarks of all users featuring a particular tag.
The success of Flickr and the influence of Delicious popularized the concept, and other social softwarewebsites – such as YouTube, Technorati, and Last.fm – also implemented tagging. "Labels" in Gmail are similar to tags.
Tag clouds Websites that include tags often display collections of tags as ”Tag clouds” A tag cloud (word cloud, or weighted list in visual design) is a visual representation for text data, typically used to depict keyword metadata on websites, or to visualize free form text.
Over-saturation of the tag cloud method led to a noted decline of usage among these early adopters.
Folksonomy A folksonomy is a system of classification derived from the practice and method of collaboratively creating and managing tags to annotate and categorize content Some websites include tag clouds as a way to visualize tags in a folksonomy. A good example of a social website that utilizes folksonomy is 43 Things.
SEO or Search Engine Optimization Search engine optimization (SEO) is the process of improving the visibility of a website or a web page in search engines. The more frequent a site appears in the search results list, the more visitors it will receive from the search engines users.
Search Engine Optimization can be done using different methods.1) Getting indexed.2) Preventing crawling.3) Increasing prominence.