This transparency saves both sides a lot of time, and is a token of good faith on the part of an employer. Those willing to differentiate in this manner deserve to be rewarded!
In this way, the community can help fellow HN'ers in a situation similar to jnwatson: The problem I have now is that my salary is so high that, without presenting a desired salary, there aren't any easy filter questions left to determine whether a potential employer is remotely interested in acquired somebody of my "caliber" https://news.ycombinator.com/item?id=13725835
My personal preference would be that the community would value itself enough to require all posts disclose salary range; maybe someday (for now this must be done manually).
Edit: added € and 0k; thanks!