Some people's Twitter musings are worth more than the Tweets of the rest of us.

Mariah Summers at BuzzFeed did some digging on the cost of hedge fund managers firing off their thoughts on Twitter. An example: Carl Icahn, the guy who wants to take over personal computer maker Dell, posted this Tweet recently:

Turns out those two sentences qualified under section 14A of the SEC's rules about information that needs to be included in a so-called Proxy Filing. Icahn's lawyers had to deal with the SEC, which reportedly cost somewhere around $2,000 in fees. Summers says Icahn's Twitter feed went pretty quiet after that.

Curious how other companies and CEOs are behaving on Twitter? Check out our slideshow of badly behaved corporate Tweeters above.

Follow Ben Johnson at @@TheBrockJohnson