We do but it doesn't work the same depending on the country. For example, in France (where we were originally based) and Europe, it's pretty effective if we call the company we target and ask for the right person (thank you Linkedin). Though, we recently moved in the US and the first calls we made didn't really work. Some people were even pissed that we called them from nowhere and where wondering how we got their phone numbers. Possibly relevant: We work in mobile advertising