Lady Gaga, Justin Timberlake and Usher are among stars signing off social networking such as Facebook and Twitter in assist of singer Alicia Keys' charity. car insurance Florida Auto
The promoting campaign, named Digital Existence Sacrifice, will raise revenue on Tuesday - Total world Aids Day - for Hold a Youngster Alive, which supports families impacted by HIV/Aids in Africa and India.
The stars have filmed "last tweet and testomony" videos.
They are going to sign back again on the internet the moment the charity raises $1 million.
Their videos will appear in adverts exhibiting them lying in coffins to symbolize what the promoting campaign calls their digital deaths.
Lady Gaga is very well-known on Facebook with practically 24 million fans, plus far more than seven million followers on Twitter.
Grammy-winning singer Keys, 29, said it was "really critical and super-cool to make use of mediums that we naturally are on".
"It's so critical to shock you to your stage of waking up," the R&B singer said. "It's not that individuals don't care or it truly is not too people do not want to do something, it truly is that they never thought of it quite like that."
The promoting campaign also involves Elijah Wood, Jennifer Hudson, Ryan Seacrest, Kim and Khloe Kardashian, Serena Williams and Keys' husband, rapper-producer Swizz Beatz.
"This is such a direct and immediately emotional way and a small sarcastic, you know, of a way to get people to pay attention," said Keys, who has far more than 2.6 million followers on Twitter.
Leigh Blake, the president and co-founder of Hold a Youngster Alive, said: "We're trying to sort of make the remark: 'Why do we care so substantially about the death of a single celebrity as opposed to millions and millions of people dying in the place that we're all from?'"
He added that he thought Lady Gaga would raise the revenue "all by herself".
"She's got a very, very mobilised fan base and that's beautiful to watch I think (and) she's able to draw their attention to these issues that are very critical, you know, and that people follow it and act."
Celebrity requests accepted
Keys, who gave birth to her son Egypt very last month, said recruiting celebrities was difficult because of scheduling, but "once I got people on the phone and I was able to paint the concept for them, everybody was in".
She added that no-one refused her request.
Keys is hoping far more people, not just famous names, will get involved in the initiative.
"It just doesn't have to be just because you're a celebrity or something like that. It can be anybody."
She added that being mother and wife made her want to help others even far more.
"As a human being, you deserve to have a chance at life," she said.