In February, Rep. Pete Hoekstra, R-Mich., found himself in a bit of hot water when he updated the public on his travels through Iraq and Afghanistan.
"Just landed in Baghdad," the congressman declared on Feb. 5 at 9:41 p.m., The Associated Press reported at the time.
Later that evening, he disclosed more details: "Moved into green zone by helicopter, Iraqi flag now over palace. Headed to new U.S. embassy. Appears calmer, less chaotic than previous here."
Hoekstra said he wasn't in the wrong, pointing out that other high-level officials also tweet their travels.
But the episode led the Pentagon to review its policy, as it views such information as sensitive, The Associated Press reported.
Pop crooner John Mayer didn't get into trouble for what he wrote on Twitter but rather that he was on it at all.
The U.K.'s Telegraph reported in March that the pair may have split, in part, because of all the time Mayer was spending on the micro-blogging site. The rumor was never confirmed but the buzz prompted social media blog Mashable to use the Twitter tracking tool TweetStats to figure out the number of tweets he was sending a day. Since February, it said he'd been sending about 7.4 a day. Not the volume of an addict, it said, pointing out that the break-up wasn't so much Twitter's fault as it was the lack of reported attention. According to The Telegraph, in the aftermath of their break-up, Mayer tweeted, "This heart didn't come with instructions."