Since I have loaded my Outlook address book into LinkedIn, I have turned to being more selective of the invitations I will consider. It might be that LinkedIn isn’t “valuable”. Any way, if you want to send me an invite, then you have to let me know you’re doing it. I’ll put you in my LinkedIn Other folder and it will allow you to send an invite. I’m down to my last 500 invites so I’m saving them. :-)