Very weakly. Strongly to those who quote-mine so badly they can't finish the sentence, yes. There's nothing I can do about them.
I was primarily concerned with the much stronger case at hand - if I were to entertain specific immoral ideas, rather than talking about some of my reasons for not talking about them in general.
the much stronger case at hand - if I were to entertain specific immoral ideas
You did :-) Let me quote you (emphasis mine):
"All of the munchkin ideas I can think of aren't so much unlikely to work as hideously unethical"
Basically you already confessed that hideously unethical ideas came into your mind and they were in sufficiently specific form for you to recognize their unethicalness. The fact that you didn't publish them on the 'net is secondary.
Note that this is not a call to raise a torches-and-pitchforks mob, but rather a reminder that you can't think about something without thinking about it :-)
Thus spake Eliezer:
It seems that many here might have outlandish ideas for ways of improving our lives. For instance, a recent post advocated installing really bright lights as a way to boost alertness and productivity. We should not adopt such hacks into our dogma until we're pretty sure they work; however, one way of knowing whether a crazy idea works is to try implementing it, and you may have more ideas than you're planning to implement.
So: please post all such lifehack ideas! Even if you haven't tried them, even if they seem unlikely to work. Post them separately, unless some other way would be more appropriate. If you've tried some idea and it hasn't worked, it would be useful to post that too.