The post homomesy and asymptotic behaviour currently ends with "regards, A. Leverkühn". My impression is that the MO policy is not to sign comments, much less posts, but removing this seems like a trivial edit. Is the etiquette to edit, to leave the post unchanged but make a suggestion in comments, or just to leave it alone entirely?
Since I was asked to make my comment an answer, I'll say that my own personal benchmark for going in and editing a post is where something in it detracts from general standards we seek to maintain (more or less professional, but allowing a level of informality one might find in a seminar). In the present case, the post is well written, and to me the signing is both unobtrusive and suggests politeness, nothing more, so I wouldn't be moved to do anything about it.
Stefan Kohl's comment raises an interesting point, but I doubt that here the intent was to discourage outside edits (even if for some it has that effect). Anyway, if there's something that needs fixing, then one shouldn't worry about fixing it. Sometimes I would bring that up in a comment so that they can fix it themselves, or sometimes it seems simpler to go in and just do it (maybe with an explanatory comment); that's left to individual judgment. If someone bristles at having their post edited -- and that's happened -- best not to get into a lengthy discussion, but rather flag for attention.