My biggest concern about this is that, despite their assurances on the website for this specific product, Facebook is well known for collecting information about you in any way possible and then selling that information. Just for example, Facebook on Android will collect all the names and contact info from your contacts list and then create a shadow profile for your friends that don't have an account on Facebook. That's just one example, and there are others. The only way I might consider using this product is if it were FOSS and I could host the product on my own equipment.