andy, I don't think it's really a full-scale apology - it's more, as Answerprancer says, a softening of any potential clash. As you know, there are people - especially online! - who are very ready do take offence where none is intended, even from someone as mild-mannered as you, and to come out with fists swinging. I generally think it's worth foreseeing and averting that, unless I'm feeling unusually feisty.
A fair point jno. I think everyone adopts the approach with which they feel comfortable. My planety-sized self-confidence sometimes blinds me to the fact that a little 'softening' may be appropriate, but as i do not feel comfortable with that approach, we will continue our respective ways, and cordially agree to doffer.
You are of course quite correct about the 'offence-takers' - one in particular who could make a saint swear with his desire to pick a fight when no conflict seriously exists!
Meh, all these answers are too short. Each would be improved by the insertion of 'like' before any noun or verb.
Makes you sound sooo much like younger (oh, adjectives as well).
Indeed - you've hit the nail on the head there JNO.
A 'softening' for the purposes of friendliness/netiquette.
Especially here where (IMO) a lot of people reside who have a tendancy to look for conflict.
....Fight, anyone ? ;-)