"Sportmanship on chess.com"

A mouse slip is no different than the touch move rule. You made your move and your opponent took advantage of it. This is why i hardly ever play rated games on my latop, because my touch pad at times does its own thing.

Today I have slipped my mouse twice. I lost the first game, I just lost a pawn but was enough to loose, and I won the second one, where I lost a minor piece.
In the second one I was lost, but after a while my opponent made a blunder so I came back. At the end he "congratulated" me saying "lucky". I responded "thanks". Fortunately he gave me a rematch and I won again with or without "luck".
My opinion is that if I make a blunder or I slip my mouse, playing bullet or blitz, that's more or less the same. Sometimes your telephone distracts you, your router gets down, etc. That's part of the fun of playing on the Internet! So I move on and play another game.

If my mouse slips, I let them know that my mouse slipped. If I'm lucky (dosen't hurt to try), he might offer a draw, but they usally reply with Oh realy?! So then I just keep on playing.

Mentioning a mouseslip is like asking for a second piece of cake: if your host/opponent hasn't noticed your predicament and offered you a second piece/chance, then it's poor form to draw attention to it.

How pathetic is it to get on here and whine about losing a couple of diddly online games? And if it was an OTB tourney (I assume that's what you mean by "real" tournament) of course I wouldn't let him take back a move! That's part of the rules...and I certainly wouldn't expect him to give me a hard time about it either, but to just resign immediately (anything else would be the act of a wienie).
Still though, I've got to hand it to you: trying to make out like all of this is why your rating isn't a lot higher! lol
I wish I had a good excuse. My rating isn't a lot higher because I lose all the bloody time.
It must be somebody else's fault though. It certainly can't be my own ineptness.

I don't understand this reasoning. Part of chess is the irreversibility of your actions. Moved is moved, whether it was a mouseslip or a mistake or an oversight or a move order flurry. Something went wrong? Take the loss, draw the lessons from it and hope for some better fortune in your next game

And yes the higher the rating discrepancy the colder the personality, the more horrible the monster behind the board :p

Mouse slip = showing less than enough care while making a move = taking a certain risk for more time. You don't get to whine after taking such risks, it's just like a pawn sacrifice.

A draw would have taken down his rating a lot, and if you believe your opponent every time they tell you "mouse slip", then you're going to get taken advantage of pretty easily, imo. Mouse slips do suck, and I've lost some games because of them, but really, they're not a huge deal. Gives you some practice in fighting while down on material :P

1. d4 e5 is the Englund Gambit look it up. To say no one plays like this is incorrect. Try clicking on the peice and then the square you want to move to because you are obviously having issues with the "drag" manoeuvre. OK Jedisson, I will shed one tear for you, but only one!!!

I find it useful clicking on the piece I want to move, then clicking on the square where I want it to go. Dramatically changes the slip per click ratio :)
I'll do takebacks, sure. If they're OTB and if the opponent is my girlfriend, an old friend or something along those lines. Anything short of that, you're gonna have to work to convince me that my errors count and yours don't.

When my mouse slips, I usually don't tell my opponent. It just sounds like you're whining. And you can't expect them to offer you a draw either.

To parrot what everyone else has said, you have to be a stickler about the rules, your own and your opponent's. I take advantage of all mouse slips. I expect my opponents to do the same. If I accidentally gave up my queen, as you did, and my opponent offered a draw, I would refuse and resign.
It's important to remove your thoughts of intentionality from the outcome of the game.
You intend to win; you did not intend to lose. But you did lose, as a fact of the matter. Thus, you simply have to come to grips with the loss and move on.
Accordingly, you intended to keep your Queen healthy; you did not intend to slip it away. But you did slip, as a fact of the matter. Thus, you simply have to come to grips with the slip and move on.

"Thus, you simply have to come to grips with the slip"...
LOL nice pun!
I agree with everyone else. If you play chess online, part of the equipment used should include a good quality mouse. If your slipping alot, either change to a better mouse, or change to point and click. Problem solved!