Just to play Devil's Advocate here, since nobody else said no, and the OP wrote:
I've see arguments both ways
Some people might not like having anybody edit their questions, and they might see it as a personal affront. This should be used with care.
For the record, I edit a few posts a day for grammar, spelling and formatting, and I don't mind at all when somebody edits mine, since it's usually for the better (Brian D Foybrian d foy, here's looking at you with all the Perl questions I asked that you fixed up). I just thought I'd bring up another side here.