Filter: Certain activities or signatures which make a page or site appear unnatural might make search engines inclined to filter / remove them out of the search results. For example, if a site publishes significant duplicate content it may get a reduced crawl priority and get filtered out of the search results. Some search engines also have filters based on link quality, link growth rate, and anchor text. Some pages are also penalized for spamming.

 

Related Words

Filter: Any of various electric, electronic, acoustic, or optical devices used to reject signals, vibrations, or radiation of certain frequencies while passing others. Electronically, filters can be . . . View Full Definition

Gelatin Filters: Filters cut from dyed gelatin sheets and held in front of the lens or studio light.

Graduated Filter: Filter with a colored section, which gradually reduces in density toward the center of the filter. The rest of the filter is clear. Also referred to as a graduated filter

Machine-Learning Filters: Filters run by machines that determine whether to block email based on algorithms that point to whether the message is likely spam.