I barely use Facebook at all, but even I know that the vile thing keeps generating these sidebar reminders that tell you – starting at least four days in advance, so you can buy virtual sheep or eggs as gifts – whose birthday it is, and when. This makes it impossible, no matter how intently you try, to forget anyone’s birthday (except for those who are sensible enough not to include the date in their Profile details, like your truly). And these notifications are magnets for people who find it therapeutic to post a standard-form “Hey, happy birthday! Have a good one :) ” on the Facebook page of someone whom they’ve never met and never want to
Well, admittedly I found the link via Bongopondit's tweet, but I think it needs some good ol' blog-link-love.