Your contact list is your most important social network. Here's how to make it better.

My Facebook friends are for most people met during parties. Most of my relationships on LinkedIn are strangers who, in my opinion, gave me a "professional" look and I am hundreds of people on Twitter and Instagram that I will never meet in real life.

But there is really only a "friends list" that deserves the title: the Contacts app on my phone.

My…