What's your FriendVenn?
So I was curious to figure out who I was subscribed to me that I wasn't subscribed to, so started writing a little something to figure it out. Unfortunately, FriendFeed's API doesn't currently allow you to figure this out so it requires screen scraping, which even more unfortunately means that in order for this to work the application requires an actual FriendFeed login and password, not just the API's remote key.
So, this app needs you to put in your FF credentials. This information is never stored anywhere it comes in, I make the requests and then everything is forgotten. I promise. If that's good enough for you to risk this, check it out below.
It divides your relationships into a venn diagram of people who you subscribe to who don't subscribe to you, people who both subscribe to you and who you subscribe to and finally people who only subscribe to you. Phew. Please check it out and let me know how it works for you.