I have a little bit of an issue with the LinkedIn Invite system, which is that it states it only wants you to connect with people you actually know, but then it also encourages you to invite anyone and everyone to become a contact of yours. It doesn’t seem to know what way it wants to go.
Because of the career path I have chosen, I get a lot of requests to connect with various people. I don’t mind that, but I do mind getting the standard form message which suggests you do not know me at all. Unless someone gives some details as to why they want to connect with me, I do not accept.
It doesn’t take long to personalize a message. Check out the profile and work out why you’d like to make the connection. I don’t use LinkedIn as a number growing network, I don’t think that’s the idea of it, it isn’t helpful to have hundreds of connections. What’s useful is to build relationships.