Saying "j’adoube" 5 times for adjusting 5 of your pieces is more annoying, isn't it?>>
That's a bit different since he can only do it when his own clock is running. If it annoys you, you have a legitimate complaint of gamesmanship. If it doesn't, the silly ass is wasting his own time.
What is the proper procedure if your opponent has made a move and the piece is not well-centered on the square, maybe even overlapping an adjacent square? In an informal game, I just ask the opponent to center the piece. What should you do in a tournament? (your clock will be running while you do this)
Mumble the word "adjust" just loudly enough to be heard as you center the piece on the square. The body language, poorly placed piece (and speed that you're touching the pieces) indicates what's going on... the mumbling makes it extra clear 
If you want to be very formal say "j'adoube" or "I adjust" each time before you touch a piece you don't intend to move or capture.
Makes no difference whose piece it is AFAIK... speaking from experience. I haven't read the rule book cover to cover.
Weird. The only pieces I'd ever want to adjust are the ones whose initial placement I don't have control.
I suppose the rule is to discourage excessive piece adjusting(?)
Isn't this what chess.com is for, to learn how to play chess.
But it's my opponents piece. I don't think I should touch them except for taking them. No?
Correct.
Rules state you can only adjust your own pieces on your own time.
That's not how I read it. My interpretation is that neither USCF Rule 10A nor FIDE Rule 4.2 states that you can't adjust your opponent's pieces. The rules only say that you must adjust the pieces on your own time, but nothing is said about whose pieces can or cannot be adjusted.
Having said that, I'd be prudent in doing this, as some people might be defensive about it. I'd only adjust my opponent's pieces if they were really way off center. (Opponent's pieces just a little off center doesn't bother me.) And if my opponent said anything about it, I'd simply stop the clock and motion for the TD/arbiter.
Don't touch the opponents pieces unless you are capturing them.
Period.
You're reiterating what was already said, stuff that wasn't relevent to the OP in the first place.
Aww-Rats had the definitive answer. It was perfectly logical--and there was nothing wrong at all with the question. Rules can sometimes seem quite arbitrary--some of them no doubt are.
Don't touch the opponents pieces unless you are capturing them.
Period.
I'm just saying that the rules don't state what you claimed. If my opponent is sloppy or careless enough to place his piece wildly off-center, I'll touch his piece (on my time, and after saying adjust or j'adoube). If he has a problem with that, that's when I get the TD involved. It's silly to have to punch the clock (and possibly screw up the move counter if enabled) just to ask your opponent to adjust his piece.
Looking at it from the other side, if I place one of my pieces way off center, I have no problem with my opponent adjusting my piece on his time. And I'd also take that as a gentle reminder for me to place my pieces with a little more care.
It was a dumb question to which the answer is obvious and/or easily found by someone really looking for edification.
It was a troll. Period.
No it wasn't.....if that was a troll question.......that was the dumbest troll question I have ever heard.
Don't touch the opponents pieces unless you are capturing them.
Period.
You're reiterating what was already said, stuff that wasn't relevent to the OP in the first place.
You don't care that you aren't contributing, or do you not care about what I said?
Because finding an image, linking it, and then replying to my post is a funny way of saying that.
What is the proper procedure if your opponent has made a move and the piece is not well-centered on the square, maybe even overlapping an adjacent square? In an informal game, I just ask the opponent to center the piece. What should you do in a tournament? (your clock will be running while you do this)
Undefined in the rules. This has happened to me: I return to the board to find my opponents rook on the border between e6 and e7. I can not be sure which move he made.
The rules should be clarified with the requirement that every piece must be completely within their squares before your move is valid.
I don't see the point of this thread
I don't see the point of this thread
Some threads are well rounded and aren't pointy at all. 
And some are just stringy
Saying "j’adoube" 5 times for adjusting 5 of your pieces is more annoying, isn't it?>>
That's a bit different since he can only do it when his own clock is running. If it annoys you, you have a legitimate complaint of gamesmanship. If it doesn't, the silly ass is wasting his own time.
I'm pretty sure that you only have to announce once that you are adjusting your pieces, and then you can quickly adjust all of them. An even better way to do it is to adjust them after you move and before you press the clock, as touch move no longer applies.
You should also only adjust on your time and I believe it is more polite to ask your opponent to adjust his pieces than to adjust them yourself (as someone in this thread earlier said they frequently did).
That's an excellent movie. Reminds me of my youth.
If you touch a piece you're interfering with the board and pieces.
End of.