Tony Sidaway wrote:
[...]
I can say how nasty I think that Mr Tulkinghorn is and what a rotten job I think Mr Walpole is doing of running the country, and I can express my belief that the Tay Bridge disaster was caused by an unsound central girder.
Agreed.
However the caveats "within reason" and "avoid substantial content on your user page that is unrelated to Wikipedia" are important. You can't do "pretty much anything...within the bounds of civility." I'd say that adding my web page to a category of "Wikipedians who think Walpole is a rotter" probably oversteps the margin by a wide mark by providing Wikipedia with a ready-to-wear voting kit for anti-Walpolians who secretly blame the scoundrel for the lamentable state of a Scottish bridge and the loss of many lives.
I guess this is the crux of a philosophical difference then, because my immediate reaction was to shrug; text on a user page vs the same text in the title of a user category. Would [[User:Tony Sidaway/list of Wikipedians who think Walpole is a rotter]] be an acceptable subpage or not?
Stan