Google Chief executive Larry Page took to Google+ immediately after the social networking site was launched in late June to post congratulatory remarks on the launch of the site.

Mr. Page also used the new social networking platform to post links to news stories and share his vacation photos.

But, Mr. Page's profile now shows that he hasn't posted anything publicly since August 15, which has prompted many to think that he has stopped using the company's new social network.

Many even believe that the company chief's interest in the new site is waning.

However, a spokesperson for the Internet search giant declined to shed light on the issue saying they couldn't comment on individual profiles.

Speaking on the topic, the spokesperson said, "We don't comment on individual profiles, but it's important to keep in mind that sharing activity can be taking place privately to circles."

Meanwhile, Google has released the first set of public APIs for Google+ to allow third-party developers to build applications for the social network.

Google+ was launched as a part of the company's attempts to challenge the world's most popular social network Facebook, which boasts of its more than 750 million users.