I love this. I love the deliciously clean design, the immediate type-and-post functionality (reminiscent of IRC), the loose feel and structure of the forum that makes it a wonderful base for customisation in any aspect. I wish this were in Ruby/Rails; then I'd set it up on my site. It's precisely the sort of forum I've been looking to implement, especially the two-column format and the IRC-style text entry box.

(I wonder how I could get it to interface with a Rails app? Would there be problems just connecting it to the app's database, to get/store user accounts and stats, for example?)

Here's the github repo containing the open-source fork of it: https://github.com/cheshirecats/CuriousWall

Thanks cheshirecat, you've done a great thing here.