Hello, I recently took over a business page with around 50k Fans. A few years ago someone purchased a mass of around 20k fake Likes. So not quite half, but a decent portion of the fan base. It's definitely impacting their edge rank, so that posts are constantly fighting an uphill battle. And I'm wary of spending much on promoting posts until we take care of some of the old fakes. The problem is, I can't find a clear signal as to their fakeness. They all are United States listed, English as language. Are there any apps out there that have a more robust method of detecting fakeness (looking at page engagement, post history, etc.)? Or does anyone have any advice as to how I might tackle this problem? Thanks so much in advance!