With the wpfriends Firefox extension you can see all rel="me" and rel="alternate" for a website, and subscribe to the current website with your Friends plugin:
For other browsers, you can use a bookmarklet:
Browser Extensions
With the wpfriends Firefox extension you can see all rel="me" and rel="alternate" for a website, and subscribe to the current website with your Friends plugin:
For other browsers, you can use a bookmarklet: