The micro-blogging site Twitter is rapidly growing in the popularity chart, if the humongous rise in the number of registered accounts is any indication - a staggering 1,500-plus per cent growth last year.

“In the course of a year, the numbers of registered Twitter accounts have grown more than 1,500 per cent,” Twitter co-founder Biz Stone said in a statement here. He further said the number of his staff also rose significantly to 140 during the reporting year.

A study by online analysis software company RJMetrics said the number of Twitter users reached an estimated 75 million by the end of 2009.

Twitter has gone up on the popularity charts with a number of celebrities, including pop star Britney Spears. The U.S. daily The New York Times started using this service, while tens of thousands use it for dissemination of information.

The most notable twitter face in the country is the Minister of State for External Affairs Shashi Tharoor, whose 'flying cattle-class' comment following the government’s austerity drive last year created a controversy. Many actors are also regulars on this platform now.

Twitter offers micro-blogging which allows users to send short text messages, among others, on various multimedia platforms.