 Specifically the program contains a directory that match specific URLs or search terms that the user enters into their browser to categories of popup advertisements.Specifically relevant to this case, when the user typed "1800contacts.com" into their browser the SaveNow program would match this to the category "eye-care" and retrieve an ad for a company in this space.At least three types of ads can be presented to the user—small "pop-up" advertisement appearing in the bottom right-hand corner of a user's screen; it may be a "pop-under" advertisement that appears behind the webpage the user initially visited; or it may be a "panoramic" advertisement that stretches across the bottom of the user's computer screen.