Have you ever linked something to Facebook, like a blog post or website, only to find that an old photo keeps getting pulled in by FB? This has happened to me and it sent me hunting for a solution. Facebook often stumps me but this one is pretty easy. Evidently, FB actually caches or stores the image on their own servers and when you post that URL the photo they have stored is pulled up. Go to the Facebook Debugger and enter the URL you want to update. It will re-scan the website or blog post and pull up the current photo.