Making the announcement on its official blog, Dick Costolo, Twitter's Chief Executive Officer, said that the company had decided to ease the burden on the micro-blogging site, and free its users from any confusion arising because of advertisements from other companies.

In a recent interview with The Times newspaper at Twitter's Chirp conference in San Francisco, Costolo had ruled out any immediate plan to ban third-party advertisements on its site - though he did not deny the possibility of doing so in the near future.

The move helps Twitter exercise greater control over the micro-blogging site, protecting it from encroachment by third-party advertisers.