I wrote my first google gadget and got the social comments somewhat working on google sites!

 

The gadget XML can be downloaded here: www.jayme.ca/fbcomments.xml
Just copy it to your site's attachments and add it using add gadget wherever you want your comments box.

 

 

If you have HTTPS enabled in your security you get a warning on secure vs. unsecure mix. Also, I am still having issues getting the moderation working. Not sure if this is directly related to the inability to modify the meta tags, but I assume it is. So, please don't spam my blog :D