I wonder what the world record is for people attending someone else party via word of mouth or word of Twitter and Facebook?

Judging from most news reports it is probably at least around the several hundred mark, although most seem to be smaller affairs such as this 50 person gatecrashing gang in Liverpool or this 150 person horde in Aberdeen both of which ended in a trashed house.

Typically, those seem like amateur British affairs when you consider this rather stupid unfortunate girl in Hamburg, Germany :

A teenage girl in Germany who forgot to mark her birthday invitation as private on Facebook fled her own party when more than 1,500 guests showed up and around 100 police officers, some on horses, were needed to keep the crowd under control.

…

The invitation quickly went viral, and some 15,000 people confirmed online they would come to the party — without even knowing the girl, weekly paper Bild am Sonntag reported.

When Thessa’s parents found out, they made their daughter cancel the party, informed police and hired a private security service to protect their home on Friday night.

Despite public announcements in Hamburg that the party had been canceled, some 1,500 teenagers and young adults showed up on the street in front of Thessa’s home, Streiber told The Associated Press.

Even with the large police presence, 1500 people milling around in a suburban street still caused a few problems even if they did not manage to get near to the house itself :

Eleven people were temporarily detained, one police officer was injured, dozens of girls wearing flip-flops cut their feet on broken glass and firefighters had to extinguish two small fires at the 16th birthday party in Hamburg, police spokesman Mirko Streiber said Sunday.

Unfortunately, the most amusing sounding part of the gathering is dealt with in one line and with no revealing picture :

The police officer was injured when he tried to keep a party reveler from breaking off the Mercedes-Benz logo of his patrol car.

Why is it the the most interesting details are always missing from these things?

Anyway, be warned – keep your invitations private or this little lot will descend and make your party one that the neighbours will definitely remember for a very long time :