Dear Sangita, i received this mail thru my hubby only last week....not sure about its announcement and start of mail circulation ...
Hi apparently it is a rumour. see the links: Answers.com - Is Facebook really shutting down Facebook is NOT Shutting Down March 15
Dear All.. This is just a rumour and it has spread to millions of people now.. Please google and find out the answer.. FACEBOOK is NOT Closing Down anytime.. Who would be stupid enough to close a XXX Billion $ Business..