George's feedback has some good leads on these hypothesized "bulletin boards":

I've seen bulletin boards around town, one on Ashley at Liberty by the gardening center and another on Washington between Main and Ashley on the side of Cafe Zola. I'm sure there are more around town but that's where I wander for lunch and coffee.

The fortuitous part is that both of these fall nearly exactly on my daily commute to school. (where, disclaimer, I use fortuitous in the more popular sense.)