Take Microsoft's Live.com for example. At the Syndicate conference I was nice and pointed out a few bugs to the Microsoft team. They fixed them by making them worse and just plain inaccessible.
They're not links. They're fake ajax 'on click' handlers which trap both the left and right mouse buttons. The Live.com team tricks the user and makes them look like links when in fact they're not.
As I've said before "a link is not a widget".
Live.com is one of those products you won't use but it's still annoying to know that it exists.