Definition of Above the Fold
A search engine result is said to be above the fold when it appears on the first page of search results and doesn't require scrolling to view. Search engine users are less likely to click on results that are "below the fold" (require scrolling). Where the fold appears depends upon the user's window size and screen resolution, but it is common practice to designate the fold as residing between positions 5 and 6. The second and subsequent pages exhibit dramatically lower performance than the first page, and the effects of the fold become negligible on these pages.
The term "above the fold" comes from the newspaper industry where headlines and advertisements placed above the horizontal fold are known to attract more reader attention.
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