What is the propper "chess etiquette" for giving up a match

Man if a person blunders early on, just do your job and mate him!!!!!!!! Why do you want free points??????????????

I didn't say flagging is bad. Time management is part of the game. I'm not resigning much when you have 2 seconds and the board is full of pieces. 

What happens a lot though is for example both sides having only a king and a rook left. One player has 20 seconds, the other has 15. The player with 20 seconds will try and flag the one with 15 seconds. That I call antics. In fact, in normal longer time controls it's forbidden in the FIDE rules to try and win like that. It used to not be widespread in blitz, but my point was that nowadays it's much more so. 

Another example of the same would be to play on in an opposite colored bishop ending, play 49 bishop moves and then play a pawn move. All with the single goal of flagging someone. 

I could do without those examples.

If you FAIL to do so because your time ends, THAT'S IT, YOU LOSE, THIS IS THE GAME!!!!

You can use all the caps you want, but under article 10.2 of the FIDE rulebook, it's not necessarily part of the game. It's a choice we've made for blitz, probably because it would be easier on the arbiters, but for online chess there is less reason for 10.2 to not apply.

"FIDE Laws of Chess cover over-the-board play"

It begins like this... so I guess you're wrong. 

You disagree with some online rules, I disagree with some fide rules. You think that a drawing position should be like "yeah friend it's a draw" and I think that flagging is just part of the game, not a single problem about it. It's a normal aspect of online gaming. You think "oh yeah back then was so much better" and I still can't understand why. 

I used to never give up and try to slip through the net even if it was just my king. i'm sure it was good experience.  I resign more easily now but it depends a lot on the timescale of the game and the rating of my opponent. You could often get a stalemate by repetition depending on the actual game. 

In a fast (1 minute) tournament it's more advantageous to resign early in a game you're likely to lose and get on with a game you can win rather than waste tournament time you could use winning. 

Don't resign because your opponent tells you to. It's your choice.

I sometimes resign out of respect for a better player.

I am sorry, I don't understand what is the difference between those two. I mean the "play online" option on this site, with clocked time (I have played 10 minutes usually)

This is all I have to say about this issue: https://www.chess.com/live/game/8643415889

This game is from the Maine Online High School Chess League playoff tiebreakers played last night. It was the result that won the match for Bonny Eagle.

I tell my students never to offer or accept a draw. If it's going to happen, it will. The same applies to resigning. Until you consider yourself a seasoned player, never resign. If your opponent is good enough, he will beat you quickly. If not, stuff happens. If your opponent is especially good-natured, he may play with his food before eating it.

Math mostly. I'm but a humble High School coach. As I said, stuff happens. Look at the game.

It's not about 'back then' it's about what it should be like, which I think should be modeled on what actually is right now in the rules for OTB chess with longer time controls.

You seem to think that it would be ok for online chess to be akin to Starcraft. I would argue it's not. Not in the last part because online chess, unlike your online games, is played by people of all ages. Chess.com is not just a place for kids, it's also a place for people of 70+ years old. And it's also a place where handicapped people can come and play chess. It's fine to flag someone that mismanaged his/her time, but flagging the K+R vs K+R where both sides have like half a minute, just because for reasons you don't know about you're a bit quicker? Chess in real life is a community where anyone can be friends with anyone else. We're a very tolerant bunch of people. I feel that those antics (and again, no, I'm not talking about flagging in general) are not doing a great service to that community spirit.

CONCLUSION: 

You don't need to resign, it's okay to flag, everyone blunders, your learn more when you don't resign, but whatever you do there's always someone who will dislike you because of his/her own frustrations.

I don't play any other games and I didn't see The QUeens Gambit ok dude?

@leob1608 , @rau4ever
Real games have huge increment and/or multiple time controls.

Let the kids play and worry about ridiculous 1|0 games. No one will remember them or care.

Man If a handicapped or old people wants to play he can get longer games like 30 or 60 minuts this is not even an argument

Even in drawish positions most games under 2000 rating are defined by time or blunders, I draw like 1% or less, while GM's draw all the time

So you are arguing about someone choosing not to resign, and flagging, and didn't even mention the attitude of the guy who was asking someone to resign... 

A match is a series of games, all played between the same two opponents.

The 1972 Fischer vs Spassky match for the World Chess Championship, for example, went 21 games with Fischer winning 12 1/2 to 8 1/2 (7 wins, 3 losses and 11 draws).