It’s often true that it’s not what you know but who you know in business. So, when was the last time you evaluated the strength (or lack of) your professional network online? LinkedIn now makes this easy, recently adding a new search filter that allows you to look at connections of your connections while doing a large-scale search on the platform. This is great news, especially for business coaches, consultants and others looking to generate leads on LinkedIn and win new business via referrals. The…