In a bid to earn extra dollars from internet users, the New York Times daily newspaper is to launch an online subscription service.

Currently the paper's online content is available entirely free. The new service will cost subscribers $49.95 (€39.54; £27.19) per year and allow access to news columnists from the NYT and its stablemate the International Herald Tribune; also to online archives. Most other parts will remain free.

The TimeSelect service, which begins in September, has been under consideration for some time and follows's hybrid model which offers a mix of free and paid-for sections.

Says NYT publisher Arthur Sulzberger: "The advertising growth on the web has been just spectacular the last few years. But like any business, it's going to mature over time, and when that happens, it will flatten ... at that point you're really going to need to have another revenue model."

Last year, US internet advertising rose 33% to $9.6 billion, according to the Interactive Advertising Bureau, a figure expected to hit $12.7bn this year.

The NYT, which runs more than forty websites, says it hopes to exploit that demand while also generating subscription revenues.

Data sourced from Financial Times online; additional content by WARC staff