The little blue birdie has been shot and it’s injured it little blue wings and was unable to fly at all for some time.
This message was shown on the Twitter status page :
Site is down 2 hours ago
We are determining the cause and will provide an update shortly.
Update: we are defending against a denial-of-service attack.
That was 2 hours ago and then an hour later:
Ongoing denial-of-service attack 1 hour ago
We are defending against a denial-of-service attack, and will update status again shortly.
Update: the site is back up, but we are continuing to defend against and recover from this attack.
Imagine the number & quality of Tweets that went un-Twittered (is that a word? It is now)!