We are using ShareKit, an excellent open source framework for integrating social sharing services into iOS apps. We have been seeing lately that sharing to FaceBook triggers a captcha prior to submission almost every time. Needless to say, this experience is not what we want to offer our users.
In addition to that, if the user has keyed in any additional text or edited the post, receiving the captcha will ignore the extra text and only post the text that was pre-filled by the app when it popped the FBConnect dialog.
Has anyone else run across this? Is there some activity that might be causing the captcha to pop up that Facebook might consider a red flag?
As background, this app has been in the app store for almost a year, and this is the first time we're seeing this behavior.