I used to use it, before I finished coding my forums. Prior to that, I also used phpbb v2. (Which is why my userid is not #1. My account was deleted, and after exporting all the users from phpbb to IPB, I had to re-register, and this was the next available ID.)

As post #9 explained, it was a work in progress for a couple years, and was very transitional at times. The forums now (and for about 6-7 years now) are 100% custom coded by myself. I'm also running a forked version of php, that has many custom additions and modifications that I added to it, which helps keep everything running as fast as it does. You won't see that in your run of the mill forum software.

But you knew all that of course. Cute, indeed.