Of course, it wasn't a full day that the world went without the amazingly successful microblogging service (see 'Massive attack' strikes websites). It was just a few - crippling, to some - hours.
But the distributed denial-of-service attack (DDoS) that hobbled Twitter and its 45 million worldwide users - and which also sucked in Facebook and Livejournal - has security experts baffled and concerned.
"Up is down, left is right and black is white," I was told by Cisco fellow and chief security researcher Patrick Peterson.
"These attacks do not make sense. In the last few years, we have seen the criminals build systems to make money and not get caught.
"Now we see them making a big splash with this attack which is of no benefit. It does not put a single dollar in their pocket and it exposes them to the risk of being caught," said Mr Peterson.
A denial-of-service attack generally works by using hijacked computers or botnets to deluge a site or service with thousands and thousands of requests, overwhelming it and rendering it obsolete.