I remember Doombot mentioning having a spoiler tag (in anticipation, no doubt of the upcomming FO3) and I think it's a great idea.
I've looked at the two mods for SMF which are supposed to do it, but I can't get either of them to work on a test system. I think they were built for previous versions of SMF and haven't been updated for v1.1.3.
Now, I've never touched CSS or PHP in my life (I can work with vba, and can recognise C on sight), but I've got a bit of time on my hands, so I spent the last two days ploughing through the various mod files (and the default SMF source files) in an effort to try to get one of these spoiler mods working. I am, however, extremely close to throwing my hands up in disgust at the whole affair... There are just all these variables... with no context... I can't tell where they come from or what they are supposed to contain.... There isn't even any real indication of where they go or what they intend to do once they get there and have downed a couple of martinis... Agggghhrrrrrr!!!!
The SMF mod forums are incredibly unhelpful, but there is a
wiki in progress which is shaping up to be very nice. I'll probably keep plugging away at it sporadically (as my sanity allows) but if anyone knows of any other resources that may assist, I'll probably get the job done faster (read - ever).