RSS feeds for Facebook Pages & Groups

UPDATE: 10 March 2015

Facebook has depreciated their RSS feeds. 

Unfortunately this method will no longer work. Some services including Inoreader will allow following Facebook Pages alongside RSS feeds. I've been using it with good results but Groups are pretty much impossible to follow now outside the Facebok website.

This post remains for legacy reference only. 

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Facebook Pages have RSS feeds available for all their wall content posted by the admin. The feed URL follows this form, where XXXXXXXXXX is the Facebook I.D. number for the page:

http://www.facebook.com/feeds/page.php?id=XXXXXXXXXXXXX&format=rss20

Here is an example of a real Facebook Page RSS feed, this one for George Takei's wall:
http://www.facebook.com/feeds/page.php?id=205344452828349&format=rss20

Finding the Facebook ID number of a page is actually quite easy.

Here's the normal URL for George Takai's page:
http://www.facebook.com/georgehtakei

Replace the "www" in the URL with "graph" like so:
http://graph.facebook.com/georgehtakei

You'll see a code page that looks like this:

You can see the Facebook I.D. number for the page right there in the first line. Just use that ID number in the RSS URL.