The link has only existed for about 24 hours now and I can guarantee that the link did not change after it was posted to twitter. I also have no idea where the ‘socialToaster’ authorship information came from since at no point did this link ever have metadata indicating that socialToaster was the author. Are you caching information about each link or about the user or posting app? We will likely use the same app to post tweets with multiple authors, is this not feasible?