I'm a recovering journalist and editor living in San Francisco (recovering from working, for the most part).
Don't be bashful about major edits to anything I contribute. Feel free to barge in and improve articles. They aren't mine. (Besides, you just might make me look better in the process.)
I always appreciate a good copy edit. Sadly, I seldom even proof my scribblings here. Thanks in advance.
If you're offended/concerned about something I changed, just say so. I might have a cogent explanation, or maybe I just goofed (that happens more frequently that I care to admit).
If you revert a major change I made, I appreciate a quick note on the article talk or my talk. But that's entirely your call.