OK, look...
Clearly, I'm getting here too late to the "party," but, while we're fairly liberal about what people say and do around here, we are what you might call obscenely militant about politeness. The very few people we've specifically banned and are unwelcome are in that situation because they attacked another member.
If anybody chooses to get into a shouting match over a disagreement and take offense over suggestions or advice--welcome or not--such people will also be unwelcome here, because it's a far higher priority for us to have an open community.
Anybody preferring to insult and be insulted, you're perfectly welcome to head over to Reddit or 4chan or the like. And anybody about to reply to ask what I mean, (a) send it as a private message, because I won't have the forum cluttered with excuses as to why it should be acceptable in this one case, and (b) phrase it very carefully, because I'm outright angry that we've lost a member over what looks to me like a childish pissing contest.