Many of the National Park Service streams are often tended by people—experts in their fields—who get excited about nature and history and have a passion for protecting the places held in the public trust. For example, the African Burial Ground (a delightfully active one for such a small site) might share a resource for researching your slave ancestors in Virginia or link to a database that details the machinations of the slave trade. Other feeds may be manned by rangers who can answer history questions for you.
There are steadily tweeting travelers who are quick to count the countries they have seen and flout their upgrades, but who confesses the dollars that made it happen? Sure, we all want to visit Yap and Bhutan, and it’s very nice to see that Instagram shot from that Grenada all-inclusive, but be honest: Do I really stand a chance of seeing it, too?