Automatic Contact Imports Prevent Good and Open Use

I have a problem with inviting all the contacts i import automatically. it prevents me from using your service the way i want by inviting only who i want. So i therefore have only one contact i added manually. It seems that the whole import process isn't straight forward. A friend imported his ENTIRE contact book, only to find out later that everyone in it had been invited by him, including even ex-girlfriends. bad move. There should be a way to import and search if the people that one imports are on linkedin and only then chose who to invite. Is that possible as of now? other than that thank you for a great service!