I am surprised that there has been no discussion of any no-no's except nastiness.

dr. bill, whatever do you mean?

There has for example been a lot of rather heated objection to mod-god's "nude modelling" post -- even though that's a subject that is hardly likely to recur.

Conversely, "nastiness" has been a recurrent problem, yet few are willing to challenging the specific nasty poster. For example, about a month ago there was a rather substanital outburst of profanity and personal attack. But I do not recall that anyone was called out for using ad hominum profanity. I would suggest that nastiness is improper, regardless of the possible merit of any underlying argument.

bartleby at http://www.bartleby.com/61/71/A0087100.html: "ad hominem: Appealing to personal considerations rather than to logic or reason. Ad hominem attacks on one's opponent are a tried-and-true strategy for people who have a case that is weak."