Pretty soon after I came to Berkeley in the mid-70s, I noticed that people here like to communicate via wall and telephone pole. Usually, they've lost something and are hoping a poster will help their lost dog, cat, earring, belt buckle, notebook, or laptop computer come home.
Why do they catch my eye? Sometimes they're a kind of found poetry. Sometimes there's some news there. Sometimes the postings are poignant or tell a story. Sometimes they're funny, and sometimes unintentionally so. Sometimes there's a bit of unhinged emotion or alarm on display (see above).
Anyway, after occasionally shooting these things for the past few years, I'm collecting them in one place, a Tumblr I've set up called Posted in Berkeley. I've put up about a dozen postings from the past year or two. It's set up to allow others to submit posts, too. (Non-Berkeley-ites, feel free to submit. Maybe I'll come up with a name that's more inclusive/expansive than "Posted in Berkeley." My first thought, "Post No Bills," is already taken.)