Coffee meetings are still my favorite, all though I don't do enough of those myself. The outcome is usually positive and they don't take up much of ones time. Also I'm a huge fan of Email and use a personal newsletter (newsletter.zinssmeister.co) to share whats on my mind with people that have the same interest as me. It isn't a huge list of people but that's what makes a personal Email newsletter so effective IMHO.
Love the idea that a Tweet can change your life. It's definitely been a great place to meet people and to learn from amazing folks. Great post, Ryan.