A U.K. man has been arrested for killing his ex-girlfriend after seeing a picture of the victim and her new boyfriend on Facebook.

A New York man was arrested for coercion and harassment after he took over his ex-girlfriend's Facebook account and began changing her settings. "He changed all of my personal information and said I was interested in women. I got a lot of requests for relationships with women – and he was the one accepting them," explained Jessica Zamora-Anderson, who said she was once in an abusive relationship with the man.

What stories made the most noise on Facebook and Twitter in 2009?

Facebook animations. (via Buzzfeed)

I Got You Something: a pile of Facebook gifts.

The Secret Service announced it will not prosecute the juvenile who was behind the Facebook poll titled "Should Obama be killed?" Secret Service spokesman Ed Donovan: "This is something we classified as a mistake on the juvenile's part."

The U.S. Secret Service says it is investigating who is behind a Facebook poll titled "Should Obama be killed?" Secret Service spokesman Darrin Blackford: "We take... these things seriously."

Oversharers: masters of too much information.

Weeks after MySpace announced the removal of 90,000 sex offenders from its site, Facebook says it has removed over 5,500 sex offenders from its user base.

A Florida student is suing her high school principal for allegedly violating her First Amendment rights. The 18-year-old girl was suspended for "cyberbullying" after writing a negative blog post about her English teacher on Facebook.