One of the best things about Twitter as opposed to Facebook is the recommendations it pulls from the ether, based on whatever magical aggregations it adds up about me. Where Facebook is under the gross misapprehension that high school was an experience I'd be happy to relive (and college for me was no different: bullied, shunned, shamed), Twitter seems to get that I'm here--on Earth and online--to follow my curiosity. So it suggests things based on other things I'm curious about, and ends up hitting me remarkably close to home.
I did in fact link to a writer who I think I was in school with at one time; he's successful now in a way I don't anticipate for myself, but I've read his work and really appreciated it. If this sounds vague, it is. His name's not the same as when I knew him, and it was impossible to judge whether his appearance had changed because I used to sit behind the person I think he once was. Precious few author photos are of the back of the person's head, so it's not clear. But I looked at his blog and realized that, despite never knowing each other in a direct way, we knew people in common, and one of them died in the time that I've been displaced from my hometown.
The memorial website was great to see, with art by someone who taught in my elementary school and recollections from a host of writers I remembered from the area. People who constituted this writer's community, but who wouldn't remember me if I went home again. It was somehow sad and happy at the same time to realize that; it's not my place anymore, and these weren't my people, but I could at least take a moment to grieve one's passing. Virtual community.