Very fair arguments. The really big point that I'm trying to make is that you're still keeping records for each everyone your contacts. Let's say you have John Smith in your address book and I'm friends with the same John Smith. I will also have a separate record of John Smith in my address book. People are creating unnecessary duplicate records of their contacts in their native address books. With Knok.Me we're letting people create their one profile that contains contact and social information of theirs. So you're the one who maintains your own contact information for you contacts. So each time someone adds you to their address book they are simply just sending a request to your profile. I would love to get your feedback on the idea. Feel free to shoot me an email if you want to chat more. I love hearing different perspectives on the problem. dami@knok.me .. I seriously think the address book isn't what it should be in this day and age.