I use a combination of LinkedIn and email to make the initial contact, which I drive to a phone call as quickly as possible. (Getting to a phone call is a high priority). I have a 62% success rate this year in getting responses from those initial contacts, so I'm happy enough with the approach I'm taking.
LinkedInNetworkingCold CallingI use all 3. Most of the new business clients I've won (61%) have come on the back of a cold call.
We actually use all of them, but Cold call is no1.