(Reuters) - Twitter Inc reinstated a British journalist's account on Tuesday and apologized after an outcry over his suspension for posting an NBC-Universal executive's email address on the service threatened to tarnish the company's reputation.
Twitter banned Guy Adams, a Los Angeles correspondent for The Independent newspaper, on Monday after he tweeted the work email address of NBC's Olympics division president Gary Zenkel.

Adams violated Twitter's privacy policy, which prohibits users from revealing other users' private information, according to an email that Adams said he received from Twitter. Twitter's policy also says that if information is available elsewhere on the Internet, posting that information on Twitter is not a violation.
http://www.reuters.com/article/2012/07/31/net-us-twitter-nbc-journalist-idINBRE86U1EZ20120731