BlockShopper v. Jones Day: The Right of Web Sites to Link
http://www.slate.com/id/2210636/?gt1=38001

Davis, Wendy
Slate
2009

Abstract:

Cases that have addressed links and copyright dealt with the permissibility of "deep linking"—linking to a page other than the home page—which, of course, is indeed permitted. Ticketmaster famously lost a lawsuit against Tickets.com about just this. But that case was about copyright infringement; by making a trademark claim instead, Jones Day opened up another legal avenue.