OSR Conservation Process. If you want the print version, that is still available at lulu via this link. Note that the OSR-CP version lacks the much-maligned purple cover.
You know what's missing from standard D&D character sheets? A spot for an animal companion. Even if you don't have a familiar or a magical talking dog or psionic chameleon, there ought to be a place for your donkey or warhorse.
Do class abilities migrate in FLAILSNAILS games? For example, I let a Lamentations of the Flame Princess-derived magic-user fire a bow and wear leather in my Wessex campaign, since Raggi's rules allow that. Should I have enforced the BX rules on that guy? And if not, does that mean my PC gets the funky bonus die from his one level as a DCC warrior and the cleave ability standard to fighters in Outland? I kinda like the idea of adventurers collecting weird abilities based upon where they were when they leveled up, but I don't want things to get out of control either.