As happened a few years earlier with Twitter, the presence of famous and notable people using the service will likely be integral to future success. Though Twitter uses "verified accounts" to let the public know which celebrity accounts are authentic, Google currently does not offer any such information. So some of the accounts below, though vetted as much as possible, may in fact be clever hoaxes. If you think any of these accounts are not accurate, please let us know in the comments below, along with suggestions for other celebrity Google Plus accounts currently in the system.
What celebrities are on Google Plus? Take a look here and see for yourself. Vote up your favorite Google Plus celebrities below!
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.
Britney Spears on Google+
Birthplace: McComb, Mississippi, United States of America
Profession: Fashion designer, Record producer, Businessperson, Songwriter Television producer, + more
Credits: Bridesmaids, Austin Powers in Goldmember, Spring Breakers, Knocked Up
Also Rankedsee more on Britney Spears
Actress Ryan starred as liberated Borg Seven of Nine on "Star Trek: Voyager" and as Veronica Cooke on "Boston Public." She has also appeared on the shows "Leverage," "Dark Skies," "Dhark" and "Body of Proof."
Jeri Ryan on Google+
Birthplace: Munich, Germany
Credits: Star Trek: Voyager, Body of Proof, Boston Public, Down with Love
Also Rankedsee more on Jeri Ryan
TV and film actress Milano appeared on the popular '80s sitcom "Who's the Boss" and the long-running supernatural drama "Charmed." She is also a philanthropist and activist, and serves as a UNICEF Goodwill Ambassador for the United States.
Alyssa Milano on Google+
Birthplace: Bensonhurst, New York City, New York, United States of America
Profession: Businessperson, Television producer, Actor, Singer
Credits: Charmed, Who's the Boss?, Commando, Fear
#28 on The Greatest '90s Teen Starssee more on Alyssa Milano
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."
William Shatner on Google+
Birthplace: Côte Saint-Luc, Canada
Profession: Spokesperson, Television director, Television producer, Novelist Musician, + more
Credits: Star Trek, Star Trek II: The Wrath of Khan, Star Trek IV: The Voyage Home, Star Trek V: The Final Frontier
Also Rankedsee more on William Shatner
Day is the writer, producer and star of the popular web series "The Guild." She has also appeared in the Joss Whedon original Internet musical "Dr. Horrible's Sing-Along Blog," and as a recurring character on the TV series "Buffy the Vampire Slayer" and "Eureka."
Felicia Day on Google+
Birthplace: Huntsville, Alabama, United States of America
Profession: Television producer, Screenwriter, Actor, Singer Writer
Credits: Co-optitude, The Guild, The Flog, Vaginal Fantasy Book Club
Also Rankedsee more on Felicia Day
Kutcher played Michael Kelso on the sitcom "That '70s Show" and replaced Charlie Sheen on "Two and a Half Men." He has also appeared in several feature films, including 2011's "No Strings Attached," and is the co-founder of Katalyst Films.
Ashton Kutcher on Google+
Birthplace: Cedar Rapids, Iowa, United States of America
Profession: Comedian, Television producer, Entrepreneur, Film Producer Model, + more
Credits: The Butterfly Effect, That '70s Show, Two and a Half Men, Dude Where's My Car?
#27 on The Greatest '90s Teen Starssee more on Ashton Kutcher
Actor, author and speaker Wheaton appeared as Wesley Crusher on the syndicated sci-fi series "Star Trek: The Next Generation," and had a central role in the '80s teen classic "Stand By Me." He currently blogs at Wil Wheaton Dot Net.
Wil Wheaton on Google+
Birthplace: Burbank, California, United States of America
Profession: Television producer, Screenwriter, Actor, Voice acting Writer
Credits: Stand by Me, Star Trek: The Next Generation, Flubber, Toy Soldiers
#40 on The Greatest '80s Teen Starssee more on Wil Wheaton
Brin, along with Larry Page, is one of the co-founders of Google. His personal wealth has been estimated at around $20 billion.
Sergey Brin on Google+
Birthplace: Moscow, Russia
Profession: Executive Management, Businessperson, Entrepreneur, Computer scientist Internet Entrepreneur
Credits: The Internship
#13 on Real World Avengers Villainssee more on Sergey Brin