The Most Influential Celebrities on the Internet

PHOTO: Oprah Winfrey, Justin Timberlake and Lady Gaga are among the most influential celebrities.
FilmMagic | Getty Images | FilmMagic

How easily can you turn the tides of social media and drive action online? For many famous faces, very easily, according to Klout, an app that uses social media analytics to rank its users.

If you use Twitter, you already have a Klout score -- a number between 1 and 100 that represents how influential they are across social media platforms, as calculated by Klout's algorithm. Facebook and Instagram users can also opt in.

How many followers you have, how often you post, how many mentions, likes and retweets you receive, how often someone shares content you posted and who they share it with are just some of the variables that can affect a Klout score.

Klout scores can change at any time, and the company is often tweaking its secret formula.

Hundreds of celebrities use social media to keep in touch with their fans and offer peeks into their private lives. Many of them have millions of followers and get thousands of shares and comments whenever they post something new.

Here is a Klout list of some of most influential celebrities on the Internet -- and a few may surprise you.

Most Influential Celebrities on the Internet

PHOTO: Justin Bieber performs at the Telenor Arena, on the second night of the Norwegian leg of his 'Believe' tour on April 17, 2013 in Oslo, Norway.
Julian Parker/UK Press via Getty Images
Justin Bieber

Klout score: 93

OK, well, no surprises here.

Not only does Justin Bieber have almost 40 million followers on Twitter, he is a social media fiend, constantly posting his thoughts, photos and links to new videos online.

Most Influential Celebrities on the Internet

PHOTO: Rihanna performs at BB&T Center on April 20, 2013, in Sunrise, Fla.
Gustavo Caballero/WireImage
Rihanna

Klout score: 93

Rihanna uses Instagram to share photos with her 7.1 million Instagram followers from inside the recording studio, backstage at her concert or going out on the town. She will often share her Instagram photos on Twitter, reaching an additional 29 million followers.

Most Influential Celebrities on the Internet

PHOTO: Justin Timberlake attends the Brit Awards 2013 at the 02 Arena on Feb. 20, 2013 in London, England.
Julian Parker/UK Press via Getty Images
Justin Timberlake

Klout score: 93

Justin Timberlake uses a lot more than his "Suit and Tie" to gain influence on social media.

He uses Facebook, Twitter and Instagram to post different kinds of content multiple times a day, reaching almost 20 million Twitter followers.

Most Influential Celebrities on the Internet

PHOTO: Lady Gaga attends the launch of Fame by Lady Gaga at Harrods on Oct. 7, 2012 in London, England.
Fred Duval/FilmMagic/Getty Images
Lady Gaga

Klout score: 92

With her whopping 37 million followers on Twitter, Lady Gaga can reach more people than the population of New York, Los Angeles and Washington, D.C., combined, with a single tweet.

Most Influential Celebrities on the Internet

PHOTO: Taylor Swift arrives at the 48th Annual Academy of Country Music Awards at MGM Grand Garden Arena on April 7, 2013 in Las Vegas, Nev.
Jeffrey Mayer/WireImage/Getty Images
Taylor Swift

Klout score: 91

Taylor Swift is one of the most successful crossover artists to hit the airwaves, and her award-winning songs have earned her millions of fans.

She regularly tweets to her 27 million followers on Twitter, but she also consistently posts photos, links and fun promos to her Facebook page, which has more than 42 million "Likes."

Most Influential Celebrities on the Internet

PHOTO: Oprah speaks onstage at the 28th Annual Rock and Roll Hall of Fame Induction Ceremony at Nokia Theatre L.A. Live on April 18, 2013 in Los Angeles.
Jeff Kravitz/FilmMagic/Getty Images
Oprah Winfrey

Klout score: 91

It's no surprise that Oprah Winfrey makes the list.

The talk show queen turned media mogul has a multibillion-dollar empire that includes OWN, the Oprah Winfrey Network, and "O" magazine.

When Oprah shares her thoughts about a recent interview, a new book or life in general, her 18.5 million Twitter followers -- and then some -- pay attention.

Most Influential Celebrities on the Internet

PHOTO: Ryan Seacrest is shown on "American Idol", April 19, 2012 in Hollywood, Calif.
FOX via Getty Images
Ryan Seacrest

Klout score: 91

As a wildly successful businessman, radio personality, TV host and producer, the many hats of Ryan Seacrest have made him into a household name. While sharing posts with almost 10 million followers on Twitter, Seacrest seems to be everywhere.

Most Influential Celebrities on the Internet

Stephen Colbert

Klout score: 90

With his punchy take on the media and provocative jabs at the country's political elite, pundit and expert satirist Stephen Colbert has earned a wide fan base online.

He regularly tweets to his 5 million followers and even persuaded Bill Clinton to join Twitter.

Most Influential Celebrities on the Internet

PHOTO: Ellen DeGeneres arrives at a Ellen DeGeneres Welcome Party on March 26, 2013 in Melbourne, Australia.
Scott Barbour/Getty Images
Ellen DeGeneres

Klout score: 90

Talk show queen and comedian Ellen DeGeneres is known for her good-natured humor and killer dance moves, but she is also an avid Tweeter.

Almost every tweet DeGeneres sends out to her 19 million followers includes a link to something she shared from her show, which helps boost her Klout score.

Most Influential Celebrities on the Internet

PHOTO: Perez Hilton arrives at the 24th Annual GLAAD Media Awards at JW Marriott Los Angeles at L.A. LIVE, April 20, 2013, in Los Angeles.
Jon Kopaloff/FilmMagic/Getty Images
Perez Hilton

Klout score: 90

Celebrity gossip blogger Perez Hilton helped build a name for himself through social media by constantly contributing to it.

In the past 24 hours, Hilton has tweeted more than 25 times to his 6 million followers.

Most Influential Celebrities on the Internet

Paris Hilton

Klout score: 89

Heiress and socialite Paris Hilton leads a life of luxury that many of us can only dream about, and her 10.7 million Twitter followers can't get enough of the little glimpses of her world she shares online.

Most Influential Celebrities on the Internet

PHOTO: Kim Kardashian poses on the red carpet at Sears to promote the "Spring 2013 Kardashian Kollection" on May 4, 2013 in Houston, Texas.
Gary Miller/FilmMagic/Getty Images
Skim Kardashian

Klout score: 88

One thing is for sure, Kim Kardashian has Klout.

The reality TV star and entrepreneur loves to dish about her life through Instagram and Twitter, where she has a combined 25 million followers.

It also doesn't hurt that she is dating Kanye West, who has a massive social media following in his own right, and the couple is expecting their first child together, which has kept them in the spotlight.

Most Influential Celebrities on the Internet

Tom Hanks

Klout score: 88

Tom Hanks is one of the biggest movie stars in Hollywood. Along with his acting, writing, producing and directing skills, Hanx, as he signs his name on social media, has serious chops when it comes sharing on Twitter, Facebook and other platforms.

Hanx often shares quirky musings with his 6 million Twitter followers and on his Facebook fanpage, which has more than 1 million "Likes."

Most Influential Celebrities on the Internet

PHOTO: Jim Carrey poses on the red carpet for the premiere of The Incredible Burt Wonderstone during the South By Southwest Film Festival on March 8, 2013 in Austin, Texas.
Gary Miller/FilmMagic/Getty Images
Jim Carrey

Klout score: 87

Even though it has been a while since funnyman Jim Carrey has starred in a new movie, the actor and director has an active social media presence, posting tons of photos on his Facebook fanpage, which has almost 700,000 "Likes."

Most Influential Celebrities on the Internet

PHOTO: Ashton Kutcher speaks onstage at TechCrunch Disrupt NY 2013 at The Manhattan Center on May 1, 2013 in New York City.
Brian Ach/Getty Images
Ashton Kutcher

Klout score: 87

A few years ago, Ashton Kutcher was hailed as a social media business pioneer and was once the most followed man on Twitter. But several online outbursts and Twitter rants tarnished the actor's social media reputation.

Even though he has been eclipsed by other Hollywood A-listers, Kutcher now has over 14 million Twitter followers and posts something new about once a day.

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