Damn it! Last year I was looking for a better Address book alternative, I found Cobook which sounded great. But before I even was able to test it, I just found out that they've been sold http://blog.cobook.co/post/73405244860/cobook-fullcontact so another promising application is dead. It is happening over and over again, every time I find a interesting closed source app it gets sold, just like Sparrow.