Here are the steps to integrate Friendfeed rooms into your website / blog, as a way of collecting feedback about that site posted anywhere on the web:

1. Register with Friendfeedy.
2. Create a room by clicking on Rooms -> "Create a new room". Set the privacy to Public for public messages, otherwise set it to Semi-Public.
3. Add a Google blog search results feed into the room using the following link, just replace example.com with your own domain 
   , and then in your Feedback Room click Import Site -> Blog, and paste the URL into the field & hit the Import Blog button.
4. To add Twitter discussions, repeat the steps above (point 3), but with following link 
   .
5. You can also add a Google News search result feed using your site's title as search query.
6. That’s it!

More info: How to use Friendfeed as a comment form?