From the BBC:

About 200 youngsters caused damage put at £20,000 to a family home (in Houghton-le-Spring, County Durham in the north of England near Newcastle Upon Tyne) after a party organised on a website.

Police said a teenage girl used the social networking site MySpace to advertise the party while her parents were away from home on Easter Monday.

The 17-year-old's mother has described the party as "house rape" and called the revellers "worse than animals". ...

"I told her that I did not want any kids or drink in the house while I was away and I'm furious." ...

She said her daughter, who has denied creating the message on the website, was now staying with friends for a "cooling off" period.

Update

The mother of the family says they may have to move out of the house permanently.

 Rachael Bell denies advertising the event on MySpace while her parents were away and claims her profile was hacked.

Her mother Elaine said the house now has "too many horrible memories".