"Birthday" Application Quickly Amasses 1.6 Million Users - And Spam Complaints

The Birthday application on Facebook has experienced incredible growth recently, but well-wishers may want to think twice before sending the gift to a friend. The app has grown from zero to nearly 2 million active users in the last two weeks, but there are quite a few negative reviews on the page claiming the app is a source of excessive spam.

Source: AppData

On the surface, the application seems pretty standard — a couple of gifts are immediately available to users, with several more unlocked when recipients accept your gifts.

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