Twitter can lead to some interesting friendships. But maybe the most unique one I have is with the cellist Zoe Keating. I mean, we’re not exactly friends – I’m more like her fan-girl – but sometimes we tweet articles and thoughts to each other. So when she came to DC, I had to see her. I mean, I don’t know anything about cellos or really any stringed instrument, but I listened to her music and it was beautiful. Plus, I wanted to meet someone doing something with her art after a terrible loss. You see, Zoe and I are Twitter friends because we both are part of the worst club…