Now to Courtney love giving emotional testimony in her own defense in a landmark libel suit. Her rmer lawyer charging she defamed him in one of her tweets. The case is a first of its kind ever to go... See More
Now to Courtney love giving emotional testimony in her own defense in a landmark libel suit. Her rmer lawyer charging she defamed him in one of her tweets. The case is a first of its kind ever to go to trial. ABC's nick watt has the story. Reporter: The green of grunge moved from the stage to the stand. Sued for allegedly libelling a lawyer on Twitter and, yep, that's now called twibel. In a 2010 tweet love suggested that Rhonda Holmes backed out of a legal battle she was waging with Kurt co-inbane's estate, her late husband. I think Courtney's testimony today on the stand made pretty clear that she made the statements that she's accused of making that she accused Rhonda of being bought off. Reporter: If love loses this could change Twitter forever if those 140 characters can really be held against you in a court of law. This is a groundbreaking case that's going to set the parameters. up and running nearly eight year, nearly half a billion tweets sent a day but this is the first twibel case ever to make it to a U.S. Court. She was cross-examined by this guy. The jury is going to have to decide whether there's anything special about Twitter. When you make false statements of fact about somebody that hurts their reputation, are you responsible for them just as you would be anyplace else? Reporter: Love at times emotional told the court these useless with computers. Thought she was just sending a personal message and quickly deleted the tweet that she has called just an opinion and she says, the internet is full of opinion and exaggeration. For"good morning America," nick watt, ABC news, Los Angeles.
This transcript has been automatically generated and may not be 100% accurate.