Sarahah, an anonymous messaging app launched in 2016, has recently gone viral on Facebook. It allows users to leave anonymous messages on any user's profile.

Once a user registers for an account with the app, they can send their profile link to their Facebook friends or post it publicly, following which anyone can use it to share messages on their profile. The problem with the app is that once you have signed up, all you end up seeing is a Facebook feed full of Sarahah messages.

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The app lets the users send messages only in the form of text with no images in it. Also, a recipient won’t be able to see any information about the sender unless the sender specifies it in the message.

A number of Facebook users are receiving dialog boxes with what looks like a half-open envelope containing funny, sarcastic, or random messages that appear on their profiles.

The app was developed by Zain al-Abidib Tawfiq from Saudi Arabia in 2016. Initially created for receiving honest and anonymous feedback from colleagues, it has become an app where you can send a message just about anything. The app, in fact, prompts the user to leave a "constructive message" followed by a smiling emoji.

The app received a major boost when Snapchat allowed users to link it with the short video sharing app. The users can respond to the request by clicking on the heart icon if they like the message or they can even block the sender if they think it is spam. In either case, the identity of the sender won’t be revealed although the app’s website states that the team behind it is working on letting users respond to Sarahah messages.

The app isn’t receiving great reviews on app store or Google Play Store since there is actually no filter on what kind of messages are being anonymously sent to people’s Facebook profiles.

While the app aims for being constructive, many users have left reviews complaining that they are receiving negative messages which are not confidence inspiring.

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Anonymity gives people a cover to say just about anything and that power can have results, many of which might not be totally positive. The app can actually turn out to be a source of cyber bullying. Also, since there are no age filters, children might also receive inappropriate messages.

Moreover, it also clutters a user's Facebook profile as he/she might end up seeing far too many Sarahah posts.

While users have exercised their discretion in signing up for the app, from that point on their discretion is limited and they might be receiving far too many spam or negative messages.