Operating Systems DO have a 'best before' expiry date, and XP isn't past it ... yet!
The other day my blogging buddy Zack Whittaker had the idea that Microsoft should invoke some sort of kill-switch to get XP users to get users moving from XP up to Windows 7. Bad idea, for a number of reasons. Realizing that this move was unworkable, he then proposes that operating systems should have a 'best before' expiry date. Now, technically, operating systems do have a 'best before' date, it's just that most people aren't aware of that fact.