Kim Kardashian, Lady Gaga and Alicia Keys
Kim Kardashian
, Lady Gaga and Justin Timberlake are just a few of the celebrities who have temporarily quit social networking sites to raise awareness and money for the Keep A Child Alive charity. (See the Kim K. Is 'Dead' Poster)

The celebrities are doing a "Digital Life Sacrifice," where they stop using Twitter and Facebook to raise awareness and money for the charity. They will log off and not sign back on until $1 million has been raised.

The event is organized by Alicia Keys, who is the global ambassador for the charity, and will go live on World AIDS Day, which falls annually on the first of December.