You can just create a simple Facebook app that has a viral effect to be shared and let people to pass it around on Facebook. The trick of reaching Facebook users is to have viral features to get them to âLikeâ, posting to their walls, and also to invite the userâs friends to use your app. Regardless of how simple your app is, you can still make your app go viral with just these features in your app.
Now, even if a user is not using any of the viral features above, your app will still show up in the userâs recent activity on their timeline/wall post when they access it! It is literally getting free advertisement without you paying for any advertising.