I completely agree on the matter of anonymity. I worry that I will be recognized or otherwise out myself; especially when I make posts such as "last night at support group..." or even rants about my sister-in-law etc. At times I go ahead anyway because it matters to get the situation off my chest. But in most cases I hold back. I think the chances are pretty high that people from my support group and even SIL have a presence here. Similarly, I at times have been pretty sure I recognize anothe poster.

Okay. Regarding being construed as offensive. This I think is more likely when the situation involves hard found beliefs like religion and politics. Some people haven't a clue that their comments are neither shared nor suitable. Does the individual in question regularly display a lack of common sense? My suggestion is to move on and ignore this person if you can.