On the hm-how-can-we-do-this-for-other-things front, here is an interesting project where they are mapping library book markings from books that escaped the destruction of World War II. This project helps to give a sense of where pre-war libraries were once located. [It gives me ideas...lots of them. You?]
If you use a Facebook Page to get the word out about your family history, here's why you probably are not getting the engagement you want -- people can't SEE it in their news feeds very easily and the way they do things on Facebook isn't going to revert back to the "old way" any time soon. This is one of the reasons why you should be putting family history information on your own website and then share links to your website on your Facebook Page. [Applies to businesses and organizations as well. You need a Facebook presence so those on Facebook can find you and your organization, but your central location for information should always be your own website with a blog. It's where you do "business" after all.]
Recently, GenealogyTrails.com volunteer contributors added new information to their website for various counties in the US state of Tennessee; for various counties in the US state of Michigan; and new school-related information for Woodford County, Illinois.