Facebook, Twitter, and IP Addresses

If your server doesn’t have a domain name yet (for example, while working on a production server and website to replace an existing website/server which is currently using the domain name), Twitter and Facebook act weird.

Twitter’s share button fails outright saying you didn’t pass it a url (even though you did).

And Facebook fails to load the image thumbnail from its share widget, even if you have all of your OpenGraph tags filled out correctly. Note that it will lint it correctly, and post it correctly, but when you hit share, you won’t see the thumbnail.