I use this trick with kik but I'm sure there are other apps you can use this trick with. When you send photos with kik the user can see if the photo was sent from the gallery or taken directly with the phone camera. I use an app called Fake Camera. Code: https://play.google.com/store/apps/details?id=cz.shmoula.android.fakecamera&hl=en With this app you can send photos from the gallery but the user will see that they were taken right there on that moment with the camera. This greatly increases their trust in you and thus the conversion rate. Example: Let's say you want to promote an Iphone giveaway offer. You first send them your link and then you send them a picture with a stack of Iphones that appears it was taken right then in that moment by you and they'll believe you're actually saying the truth. I tried explain it as easy as possible but english is not my main language.