Google+ reaches 25 million users: comScore

It is not known how many users are dormant, having signed up briefly through links in their g-mail accounts.

However, comScore has pointed that Google+ is also growing the number of unique visitors visiting the network on a daily basis - by a rate of one million a day.

By comparison, Facebook took approximately three years to reach the 25 million user milestone, MySpace took just under two years, while Twitter found its way to the mark in just over 30 months.

In Asia, the data shows that India led the way with 3.6 million unique visitors, while Taiwan had around 500,000 thus far. Across the globe, the US leads the pack with more than 6 million unique visitors, Canada and the UK each having 1 million unique visitors each, Germany over 920,000, Brazil with 780,000 and France attracting 500,000 unique visitors.