where can you improve your chess skills more? in playing blitz or playing long games?

it depends on u..
but i'd vote blitz. more games = more experience

Long games are better, enough time to think and plan, and then after the game see why your plans did or didn't work...etc. 

Blitz games are more of a regurgitation of what you already know. 

Well, if you want to be better at blitz, I would play blitz.

I prefeer correspondance games, mostly because of the longer time you can have and the analysis you can do.

Another useless comment by the simplton.

Blitz games are for practising what you already know, longer games are for improving, especially if you study a new opening, and then try it out in one of your games, trying to make things work will give you a good understanding, win or lose.

Did you know one way to spot people that are overly sensitive and easily threatened is their inability to spell simple, yet usually the most critical, words in their feeble ad hominem attacks? 

Lighten-up dude, no one is comin' after you and your lucky charms there at the end of the rainbow, laddy.  What would Richie Blackmore do?  WWRBD?  He would go write some power chord anthem, that's what. 

my thoughts exactly. 

blitz teaches me to F around and avoid results while my opponet's timer runs off.  online teaches me to use my pieces well and to play for checkmate.  at least i think it does--it's supposed to.

Actually, when he does use powerchords, he uses INVERTED power chords.

Playing blitz will sharpen up your blitz techniques, not much more than that. Handy in severe time trouble and another way to practice and run through some openings.

I guess it depends on what your goal is ,if you want to get better at blitz then by all means play blitz. If on the other hand your wanting to play high lvl chess then I suggest you play slow meaningful games where it gets a bit deeper than 2 move tactics.

I use Lightning Tactics (~3-10 seconds) to improve my Blitz performance.

I use Blitz Tactics (~3-10 minutes) to improve my Standard performance.

I don't play games for the sake of improvement. If I did, I would just repeat the same mistakes over and over. Nothing of value would be gained.

you're so mean richie...at least tell him which word he misspelled.  

atomic...let that poor dear rest.  he's fatigued from trying to save the planet before bedtime.

Oh and to the original poster (sorry to bring our grudges here), I have found in my limited experience that you can't really be any good at blitz until you have at least a very strong openings foundation a fair amount of long play, and some good tactics practice.  After that, I suppose you could practice blitz to get better at blitz.  But before that, it's like spinning your wheels in the sand/mud.  

Maybe I don't have anough qualifications to air an informed oppinion. But all that I heve seen is that top blitz players are also top long chess games players. Maybe the correct path is to be good at long chess games first, for be a good blitz player.

Playing long at the begining so that the left side of our brain gets comfortable with the moves, and eventually playing blitz !!!

Which playing skills? If you play only long games then you'd probably be not that good at blitz, and vice versa. But generally "chess skills" refers to rating, titles, so it's connected with long games. So you have to play long games + blitz as a tool to practice openings, time trouble situations, etc.