These crawls are part of an effort to archive pages as they are created and archive the pages that they refer to. That way, as the pages that are referenced are changed or taken from the web, a link to the version that was live when the page was written will be preserved.
Then the Internet Archive hopes that references to these archived pages will be put in place of a link that would be otherwise be broken, or a companion link to allow people to see what was originally intended by a page's authors.
This is a collection of web page captures from links added to, or changed on, Wikipedia pages. The idea is to bring a reliability to Wikipedia outlinks so that if the pages referenced by Wikipedia articles are changed, or go away, a reader can permanently find what was originally referred to.
Regarding the opposite sex, they're on a steep learning curve. In every other sense, they're geniuses. Join physicists Leonard Hofstadter (Johnny Galecki) and Sheldon Cooper (Jim Parsons) as they ponder black holes, chemical deviations, girls, and other mysteries of the universe in all 24 phenomenally funny episode of the Season Five. With Penny (Kaley Cuoco) and Leonard's relationship in uncharted terrain, Sheldon, Howard (Simon Helberg), and Raj (Kunal Nayyar) discover that the feminine mystique is something that cannot be easily graphed or calculated. As they muddle through relationship "bugs" and romance re-launches, they also discover it's nothing a good roll of the D&D; dice or a paintball tournament can't solve.
This information is not complete and will be completed when the information or time becomes available