I love this. You know you've blown up when you've got racks of servers just to support your Twitter account. To bad it's not someone with a little more to say. From a tweet by Dustin Curtis quoting a Twitter employee:
"At any moment, Justin Bieber uses 3% of our infrastructure. Racks of servers are dedicated to him."
When will references to "all my racks at Twitter" make it into pop/rap songs? (via kottke)
By my rough estimate that's about 1.2 million visits a day.