Stars sometimes cause us vast moral dilemmas.

Should we support those stars who gyrate appallingly, but whose music we secretly love Should we adore those stars whose songs we adore, but whose personal life seems a sewer of broken hearts and severed senses

Now there is another parameter to this axis of complication.

Lady Gaga, she of the interesting designer fashions and music for gym clothes, is, along with other stars, quitting Facebook and Twitter.

There are those for whom this news might signify disaster on a worldwide scale. Lady Gaga, after all, has more than 7 million Twitter followers, more, it seems, than, it seems, anyone else. On Facebook, she has almost 24 million fans. Some, though, will think this excessive for an artist of such certain, but limited, qualities.

And yet, she and stars such as Justin Timberlake and Usher, are, according to the BBC, merely quitting on a temporary basis. Or at least so they hope.

A sample of Lady Gaga&39's tweeting.

You see, Alicia Keys has a charity called Keep a Child Alive. In order to raise money for this worthy cause, which commits itself to families whose lives have been affected by HIV/Aids in Africa and India, Keys has persuaded stars to quit social networking until people donate $1 million.

So here, for some, resides that moral conundrum. Should many people in the world feel that Facebook and Twitter would be enhanced by the disappearance of the likes of Gaga, Timberlake, Kim and Khloe Kardashian and Ryan Seacrest, all they have to do is deprive an excellent charity of much-needed funds.

Keys is not unaware of the irony of her movement. She told the BBC: "This is such a direct and instantly emotional way and a little sarcastic, you know, of a way to get people to pay attention."

The president and co-founder of Keep a Child Alive, Leigh Blake, added: "We're trying to sort of make the remark: 'Why do we care so much about the death of one celebrity as opposed to millions and millions of people dying in the place that we're all from'"

They both offer stellar logic.

However, some might wonder whether more money would be raised had their irony been to offer that the more money is donated, the longer these stars will stay away from Facebook and Twitter entirely.

Perhaps they could experiment with half the stars being dedicated to this latter logic. How much might one imagine that people would pay to keep, say, Kim Kardashian from tweeting that she is sitting next to an air marshal on a plane