I saw an answer with a long italicized disclosure at the end, like
Disclosure: [X] is my current label. [...yadayadayada...] ;)
Is disclosure something we should demand or remove (as "noise" that is inessential to the question or answer) under certain circumstances? Are there other sites where disclosures have proven important that can provide some guidance? I found one meta.SE Q&A on this, related to StackOverflow.
My opinion. It's not something to worry about. There shouldn't be a lot of room for promotional activity as long as we have good, narrowly-posed questions. That is, if disclosure seems appropriate, there's probably something wrong with the Q or A. I can't think of a good Q&A where we would expect or demand disclosure, though maybe someone else has an idea...?
If we don't demand it, I guess people will only volunteer it (as the answerer above did) very infrequently, so there's no need to come up with any policy for cleaning it up. Of course, shameless plugs should be snuffed out, but I'm asking: Do we need a policy on disclosure?