Twitter’s “mentions” system using the “@ reply” is super handy. Webpages should have them. When someone links to your page, you get a notification. By email. Or use the web browser notification system. WordPress’ trackbacks and pingbacks are a step in the right direction.
Sure, I can run Google Analytics and track these kinds of things, but it should be automatic and you should be able to get pinged when it happens in real-time, with little effort on your part. Google Alerts doesn’t seem to do the trick. I see lots of links to this blog in the WordPress stats that do not appear in Google Alerts using the method that link suggests.