Facebook application called 'What Are Your Most Used Words on Facebook?' has been accused of data stealing as UK based VPN Company Comparitech warns that it is a privacy nightmare.

The Facebook application was created by Vonvon, a South Korean company. Over 18 million Facebook users have tried out this app which displays a "word cloud" based on a user's most frequently used words in past status messages.

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Forbes reported that when a Facebook user signs up for this application, he or she agrees to give the application permission to collect its profile picture, age, posts, friends list, posts you are tagged in, education history, birthday, hometown, photos, likes, IP address, and more. And this data will be stored on Vonvon's servers across the world.

"We may continue to use any non-personally-identifying information in accordance with this Privacy Policy (e.g., for the purpose of analysis, statistics and the like) also after the termination of your membership to this WebSite and\or use of our services, for any reason whatsoever," reads Vonvon's privacy policy.

Vonvon explained that the personal information is processed on its servers in difference countries around the world and this Information may be stored in any of its servers, at any location.

Vonvon's CEO Jonghwa Kim told Sophos that private data is not stored in the company servers, and was not even sold to advertisers. Kim said that the information gathered by the app is only used for generating the results.  He explained that "Word Cloud" results are generated in the user's browser.

"As we do not store any personal information, we have nothing to sell. Period," said Kim.

Kim during an interview on VentureBeat said that Vonvon is his third startup. Recently, Kim sold a website called Wingbus (travel blogging site) and Dailypick (a social e-commerce website), for $9 million in the same year. Vonvon has over 40 editors that create online quizzes, which are monetized by display ads. The company also makes money by selling branded quizzes on behalf of corporations.

Facebook users must review their app settings from time-to-time to avoid this "privacy nightmare."

TagsWhat Are Your Most Used Words on Facebook?, Vonvon, Facebook Apps, security issue facebook apps, Facebook Privacy, Facebook Privacy Nightmare, Facebook Quiz Vonvon Data Stealing