Not only can you get into trouble with schools or employers for what you post on you Facebook, MySpace, YouTube or blog, but now it can be used as evidence for police.

Last year in riot at the University of Massachusetts, campus police arrested 34 people, 31 of whom were students. A total of 57 people where charged for violences during the riot.

If you were able to escape the police before they showed up, you could still have been charged. Police told reports from the DailyCollegian.com, that they used security cameras from the area, as well as cell phone videos posted on students Facebooks and MySpaces, and YouTube. Since the police could not see everything that was going on, this was there only way to catch everyone.

“We have no intentions of stopping until we’ve identified every single rock thrower and every single person who is responsible for the damage,” Archbald said in a Jan. 25 interview. He said detectives used video footage from campus cameras and from YouTube.com, photos from cell phone cameras, facebook.com and MySpace.com in an effort to identify the accused.

School disciplinary actions ended with 5 expulsions, 28 suspensions, and 22 differed suspensions.

The riot occurred following a football game, in which UMass lost to Appalachian State 28-17. Over 1,800 students gathered at the schools Southwest Plaza, rioting and throwing rocks. Several police offers where injured and around $100,000 in damages were reported.