"Twitter was shut down for hours Thursday morning by what it described as an “ongoing” denial-of- service attack, silencing millions of Tweeters the world over. It’s the first major outage the service has had in four months and possibly the first ever due to sabotage. The outage appeared to begin mid-morning, EST, and affected users around the world. In a post that appeared later this morning, Twitter co-founder Biz Stone, gave no indication of how the defense was going, or how long the service might be down in the brief update." - Susan Beebe

The most interesting apect is how this attack on Twitter is affecting other services. - Liz