From the I’m-likely-to-lose-track-of-this-unless-I-mention-it-here department: Mozilla’s DOCTYPE sniffing, including Almost Standards Mode. Must also remember Matthias Gutfeldt’s pages on DOCTYPE switching, since that’s always where I send people when the topic comes up, which seems to be every couple weeks.

I’ve actually done very little with DOCTYPE switching except spread awareness of it when troubleshooting others’ designs, and am unlikely to do anything with Mozilla’s Almost Standards Mode since I’d rather use other solutions to the “problems” it solves, but still: if I don’t make note of it now, I’m likely to have a harder time finding it when I need it.