You know that saying "what happens in Vegas, stays in Vegas"? When it comes to the Internet, the opposite is true. Anything that you post on the Internet is fair game and yes, this includes tweets. Malcolm Harris is currently on trial for crimes related to the Occupy protest, during which he was arrested last fall. Prosecutors issued a subpoena for Harrison's Twitter account and the judge granted it, ruling that Harris couldn't challenge the subpoena. Judge Matthew Sciarrino Jr. compared it to a bank account holder having his financial records released.
While this might be a first in any sort of official capacity, it certainly isn't the first time that something someone posted online came back to bite them in a legal sense. This could set a precedent for future cases and should serve as a warning to all - be very, very cautious of what you post on Twitter.
via Slash Gear