New Delhi, (Agencies): "JPC might include ISRO and Adarsh scams. Congress has nothing to hide because what's hidden will never be found." This is what a tweet by "Sonia Gandhi" says. But hold your breath, this is fake.

There are several such postings one can find from sham accounts of politicians and top celebrities on popular social networking sites such as Twitter and Facebook.

And it seems these sites have emerged as a nuisance for some top leaders, especially the Congress president and Prime Minister Manmohan Singh.

There are a number of accounts in both Twitter and Facebook in the name of Sonia and the prime minister whose tweets -- from their fake accounts -- are based on alleged corruptions in 2G Spectrum allocation, S-band deal, Commonwealth Games and Adarsh Society.

Another tweet from her says, "Most countries make people poor through taxes. We make people like (Suresh) Kalmadi rich. That's what makes us so wonderful."

Similarly, a tweet from an account named after Prime Minister Singh says, "Madam ji, left can never be right ji. Purulia can never be rae barreily ji."

Most surprisingly, there are also twitter accounts in the name of Mahatma Gandhi and late Prime Minister Indira Gandhi and her father Jawaharlal Nehru.

The case with Facebook, which claims to have more than 500 million users around the world, is even worse.

Most of Rahul's accounts contain his photograph and bio-data, including his address, telephone number, profession and philosophy. And his followers run into thousands.

In one such account, which looks very real, Rahul says "There is a work that my father had started, a dream he had dreamt. I come to you today saying...allow me to turn that dream into reality."

But Congress sources said Rahul is not active in either Facebook or Twitter and the party has ordered a probe to crackdown the impostors who are using accounts on his name.

However, Facebook, which allows one to post messages, pictures, videos and almost anything under the sun, doesn't have a technology that can authenticate real accounts of celebrities.