abstract:A 'Web Archive' is a file format that archives inside it all the content of 1 web page. There are although file formats that can store more than 1 web page inside it, like the Mozilla Archive Format.
The library has been archiving congressional and presidential campaign websites since 2000, for example, and it currently has more than 200 terabytes of webarchives.
My personal favorite use of libraries is for photographs that are digitized and up on the Web, provided from the archives of the Denver Public Library and the Library of Congress.