Wow... I first designed a website with a 'structured' navigation system back in 1998, when I first got into web design. This was most likely because I considered it natural and obvious, or because I had seen it on TEN MILLION sites by then. This is one of the more pathetic patents I have ever seen, but I cannot believe that these clowns are trying to enforce it. If they come after me, I'll be pissed.