Comments don’t belong there, IMO.
Thanks for the response.
But seriously, I think it started with barf alerts - although I don't know how those started (I mean, if we don't put them before every Helen Thomas picture, what's the point?)
I've also seen parenthesis usefully used in attempts to avoid double posts. For example, different publications might use different headlines for the same syndicated article.
Your point is well taken in regard to placement of comments, but it's a fine line in some cases.