At the beginning of the movie, Jay and bob surf on the Internet with Ben Affleck character who show them a site about the upcoming movie made with there character. If you look in the address bar of the browser they use, you will see "file://something" instead of the usual "http://www.something". Any web developer will understand that they are actually not on a true web page but instead in some file the director have put LOCALLY on the computer.

It's pretty stupid because the second time they goes on this web site (when they are at the restaurant), you then see the normal "http://www.something" in the address bar...