I don't like compromising the quality of the game.

I think it is fun, but not a very beneficial tool.

It's nice to practice some openings. But it can harm your game! ;)

One can only vote for one option so my choice was "negative influence". Quick chess does help in time scramble - you keep your nerve. I also use not quick chess so much - but no-increment blitz - to get a feel for opening lines that i am considering playing seriously in the future.

But on the whole, I do think it has a negative influence on my chess. Yet since I took up chess again in 2006, I play blitz and quick much more than "proper" chess. Human beings are not *that* logical - nor should they be imo;)

Just fun, I consider quick chess to be only matter of time.

Its got to be mainly negative although it does have a couple of positives. It prepares you too keep composure when low on time over-the-board and shows just how important inititive is as if you have alot in quick chess you tend to win.

best way to prove "the honest player in online"

My first checkmate was a two hour game. Since, I've realized that taking my time and fully analyzing my options is the best way to win a game. When I rush I sometimes do poorly. 

It's hard to say, but I know that I play much WORSE in quick games. On chess.com, my rating has climbed significantly in the last few months, but I think it's a bit deceptive. In openings, I make a lot of moves based on databases instead of using my head. Later in the game, I have all the time I need to calculate variations and figure out which moves are really bad.

 

Obviously, it's exactly the opposite in quick chess...what I really need to improve in chess is to play some real, traditional OTB tournaments. But meanwhile, I think playing both fast chess and ultra-slow (correspondence) chess will help me balance out my game... 

for me it's negative, though I like to play fast.

That's the problem, I'm not calculating in correspondence chess at all anymore, just playing on intuition

I think it have rather positive influence because you can define what problems you have: opening/endgame theory (quick chess is great indicator of automatic play in know positions for you), you blunder often or don't see winning moves, also quick chess is a good tool to "warm" before serious competitions and, of course, it's fun.

I actually think it's negative influence.