That clicking in the courtroom could be Tweets.
Dozens of jurors each day send Twitter or other electronic messages from courthouses across the country.
Experts say most messages posted to the social networking site are innocuous, perhaps expressing boredom. But at least a few jurors have gone online to discuss cases they are helping decide.
In Philadelphia this week, a juror in a high-profile public corruption case told Facebook friends to "stay tuned for a big announcement on Monday" -- forecasting that a verdict was near.
The juror, Eric Wuest, compares the sites to journals where he posts his private thoughts. But some lawyers think jury instructions should be updated to clarify that online communications about a case are also prohibited.