On the other hand, the applications can be overwhelmingly irritating. The news feed is a blessing and a curse. I like to know when there are new photos of my friends to check out, but I don't care about what Zombie they just became. And regarding the app signup notifications in the feed: there are some things I'd rather not know about my friends, and one of them is how much time they are spending goofing off on Facebook...
Note to startup hackers: if you're on facebook and more than 50% of your news feed is your CEO's random facebook activity, it might be time to look for a new job (or start your own thing.)