Twitter Outage Has Social Network Users Atwitter

The micro-blogging site Twitter was out of business for most of yesterday and other sites were affected as well. One person was responsible for yesterday's outage, a blogger who favors the nation of Georgia and who was the subject of a denial of service attack that caused problems elsewhere on the Internet. Elinor Mills, senior writer for CNET News at CBS Interactive, explains how it happened and what it means for the future.