Google+ is failing to persuade users to spend time on the social network, new research has revealed.
A study by comScore found individuals in the US averaged just over three minutes on the site in January, while rival Facebook saw its users spend around seven-and-a-half hours using the service.
Although Google's platform has surpassed 90 million users, it is still far below Facebook's 845 million active users.
It was also estimated last week by monitoring firm Twopcharts that Twitter has passed the 500 million registrations mark.
The Wall Street Journal noted one of the problems for Google+ is it has been unable to create a unique identity that differentiates it from its rival.
Analyst at social media advisory firm Altimeter Group Brian Solis told the publication that "nobody wants another social network right now", adding: "Google hasn't communicated what the value of Google+ is."
However, vice-president of product management at Google Bradley Horowitz said the service's performance is extremely hard to measure, as it is intended to be more of a portal to other Google products such as YouTube rather than just a destination site.
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