Google's social networking site Google+ started with a great momentum, compared to the other social networking sites, earning over 25 million users within a month.

Few weeks after Google+ was launched, Google had taken up a celebrity-acquisition plan, as CNN reports, to increase publicity for the site.

Mark Zuckerberg, the CEO of Facebook, competitor to Google+, was one of the early adopters of Google's networking site.

Here is a list of the big shots in Google+:

Britney Spears
Pop icon Britney Spears released her smash hit debut "Baby One More Time" in 1999 and has been consistently recording and performing ever since. She was ranked the 8th most popular artist of the 2000s by Billboard Magazine. REUTERS
William Shatner
Geek icon Shatner portrayed Captain James T. Kirk on the original TV series "Star Trek." He also was a regular on the popular TV series "TJ Hooker," "The Practice" and "Boston Legal." He's also known for his various meta-examinations of fame and celebrity, including the spoken-word album "The Transformed Man," appearances in the ads for Priceline.com and his documentary film "The Captains." REUTERS
Paris Hilton
Paris Hilton is a socialite and reality TV star known for her appearance on the television series The Simple Life, her music album Paris and her modeling work. REUTERS
Sergey Brin
Brin, along with Larry Page, is one of the co-founders of Google. His personal wealth has been estimated at around $20 billion. He is ranked by Forbes as the 32nd richest person in the world. REUTERS
Mark zuckerberg Hollywood Britney spears Google