So, Twitter has been down for over half an hour now. They've acknowledged this on their status blog.
Many users (including me) are reporting problems with Facebook too.
Is this the apocalyptic scenario when the world's social media collapses?
Maybe this is a Denial of Service or hack attack? What are the implications if the world's personal information lands up in the hands of some hackers, or even worse, an authoritarian government. After all, is it just a coincidence that this happens one day after Ahmadijenad was sworn in as Iran's President?
Update @15:28 BST. Livejournal is now down as well.