This is tool is called FbFriendFinder where you just need to choose any network Linkedin and Twitter from which you want to import contacts. You can import contacts by uploading your file or by just clicking on the export contact page.

Read more from (“Find Your Whole Social Graph on Facebook at Once With FBFriendFinder” readwriteweb.com)

Quiz Monster
14,428,639 monthly active users

Quiz Creator
4,975,432 monthly active users

(Lil) Green Patch
1,473,484 monthly active users

I-Quizzes
963,969 monthly active users

(Lil) Blue Cove
502,335 monthly active users

My Personality
487,496 monthly active users

Quizzes
484,536 monthly active users

weRead (Books iRead)
356,770 monthly active users

Interview
340,520 monthly active users

(ref:- bbc.co.uk)

The application launched in 2008 to allow users to submit intelligence about crimes and get a news feed of incidents. Greater Manchester Police (GMP) said the device provided vital intelligence to help bring criminals to justice.

Every one knows Facebook has crossed 300 million users & GMP is a UK forces to use Facebook to take action against crime.

Assistant Chief Constable Garry Shewan said: “We’re keen to keep residents in Greater Manchester updated on what’s happening in their local area and Facebook is a great way to reach out to people on a more informal, personal basis.

“It’s really encouraging that so many people are keeping themselves updated through our Facebook application and demonstrates how GMP has managed to use this new technology as another tool to communicate with the public to help fight and detect crime.

“We hope that the figures of people accepting this application will keep going up so we raise further awareness of incidents taking place within our local communities, in a bid to gain more intelligence and reduce crime in Greater Manchester.”

As well as Facebook, the force also has a presence on websites such as Twitter, YouTube, MySpace and Bebo.

Zoosk

Zoosk is a fun way to socialize and meet other singles in your area. Set up a profile and see your matches right away.

5,517,055 monthly active users

Collect Hearts

Send and collect gorgeous hearts right on your Facebook profile!

3,683,033 monthly active users

Cities I’ve Visited

Create an interactive travel map to pin all the cities, towns, and even suburbs you’ve visited…not just countries! See which of your friends has traveled the most! Available in English, French, Italian, German and Spanish.

2,399,327 monthly active users

Likeness

Find out who you’re like! Compare yourself with friends and movie stars like Angelina Jolie, Jessica Alba, Keira Knightley, and many more. Can you find a perfect match?

2,397,518 monthly active users

Circle of Moms

Circle of Moms is the best resource for moms on Facebook. Create a close-knit circle of the moms you trust or join communities of like-minded moms for advice, empathy or gift recs. Join the millions of moms who have discovered Circle of Moms (Mums)

2,318,216 monthly active users

Games

Play and challenge your friends to hundreds of fun and addicting games like Bricks Breaking, Gems Swap, Pac Man, Crazy Taxi, Word Scramble, Solitaire and more.

2,064,449 monthly active users

Pass a Drink

Pass a drink or a round of drinks to your friends to show them some love! Join the virtual pre-funk today!

1,477,127 monthly active users

Lollipop

Suck your friends’ Lollipops!

1,284,194 monthly active users

Fashion Wars

All the honeys makin money throw your hands up at me! If Paris can do it, you can do it even better. Become top fashion diva in this game about style.

1,134,853 monthly active users

Mon Coeurs

859,726 monthly active users