Favicon: Browsers display a small image next to a bookmark when page is viewed, which is placed in root of the directory with "favicon.ico"

FFA: FFA means free for all. Some websites allow anyone to submit websites in their webpage this is called FFA.

Filter Words: Filter words are common words; search engines are not include the common words in their data base. Examples for common words are the, is, and, can so on.

Frames: In order to have multiple windows in a browser HTML tag frames are used. Frames are static when clicked different frame is opened.

Frequency Cap: Maximum number of times an advertisement that is shown to a website visitor is a Frequency Cap.

Freshbot: Googles WebCrawler/spider is two types. 1. Deepcrawler 2. Freshbot. Deepcrawler index the entire website one time or two times in a month and Freshbots cached the high ranking or frequently updated pages approximately every 24 to 72 hours.