Just started looking into the latest W3C Web Accessibility Initiative (WAI) and how my sites both inside, and outside of work, fit in.
Curiously, one of my biggest failings is with links. Now, I've always hated sites that have links that don't create a new browser window if it's an external link. I guess I've been used to using a PC that's so slow I can't be bothered using the browser back function to navigate around. However, reading the various guidelines, and using some of the checking tools, it appears I've unknowningly broken the browsers back, to coin a phrase. And, it appears, in some states in the good old US of A, it can be considered a breach of someone's human rights 
Hmmm, better have a good dig around and fix these things, least then I can browse the site on my mobile, and maybe expand my readership to more than half a dozen 
I *used* to do write sites that spawned new windows. Then I started using browsers that actually work from a users' point of view. Which usually boils down to: click a link to open it in the present window, command/ctrl-click it to open it in a background tab. Chuck in FireFox extensions like SessionSaver, Safari extensions like Saft, or (in my case) just use OmniWeb, and you have a very much more usable piece of software.
So now I find myself driven up the wall by sites that deliberately spawn new windows all over the place. Damned things.
The sooner IE7 ships and becomes standard - or the sooner everybody just gives up and moves to FireFox - the better.