Yes, I love this idea. And Boni's mod too. I've been thinking about an agony aunt type of column in the newspaper, in which people write in with questions/problems/situations, and the agony aunt gives advice. But putting a notebook in a tavern would be even better maybe.
I tried this a couple of times in gossip, it was called "Dear Nico" and was awesome (in the sense that it was funny and the questions I got were great).
If it is possible and easy to do, would love to see a locked book like this in the Stonehead where the citizens could write about their love or life problems and get advice on how to solve.