Eight lives changed by Twitter

Published On: Mar 21 2013 02:22:14 PM CDT   Updated On: Dec 26 2013 01:43:23 PM CST

An offensive tweet about AIDS in Africa created a firestorm over the weekend and ultimately cost public relations executive Justine Sacco her job. Check out eight lives changed by the popular microblogging site.

Twitter turns seven - Ashton Kutcher
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Ashton Kutcher. Kutcher became the first Twitter Celebrity after joining in January 2009, when the site was getting ready to make the leap from tech-savvy coffeehouse to household name. He got tons of publicity for becoming the site's first user with 1 million followers -- a distinction he won after winning a race to seven figures with CNN. He also became a savvy investor in tech startups. He's now 23rd on the site's popularity list, with almost 14 million followers.

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