Trying to set up a follow button with Facebook's plugin here:
https://developers.facebook.com/docs/reference/plugins/follow/
I've found that any profile url I enter that contains periods (for example, http://www.facebook.com/John.Smith) will return an error.
From the error console I receive
Failed to load resource: The requested URL was not found on this server.
This happens with the HTML5, iframe and URL versions of the plugin. Just out of curiosity I tried encoding the period with %2E, and I also tried using the numeric profile ID, but neither worked.
Is there any other trick I can try to make this work?