Duncan...really long toots should use the content warning thing to be more compact on other people's timelines. Then again that sort of defeats the purpose of the content warning.
Frankie SaxxThat's a totally valid use of the CW feature. I've seen a number of people do it. :) The point in the feature is a way to to be courteous, I think. The function itself doesn't describe why you're using it; you do that in the description box, so you can use it for spoilers, triggering content, long posts, even knock knock jokes.
:)