Clinton,

A couple of years back, you mentioned that you were at work on a TSOY supplement, something to do with religious groups and cults in TSOY.  Did that go anywhere?  Or have I been out in the sun too much and you weren't working on a project like that?

Clay,

there's Yesterdays Heresies, which probably is what you mean, but it is very incomplete:

http://files.crngames.com/cc/tsoy/yesterdays_heresies.html

Also, George Shannon detailed some of what's been left out by Clinton:

http://www.smokingmirror.net/SoY/secondary_heresies.html

Thanks for the link.  Some of the unfinished cults are pretty funny.  I like the Elves' cult in particular.  And if I'm feeling silly some time I'll invoke the goblin cult.