It is just a fact that the last time Barcelona took a proper corner was around 1947... well not quite, but it's been a long time. It is pretty obvious that the reason they play them all short is because 1. They don't have the size or strength in the box to score often enough, and 2. It will usually end up in a loss of possession. This seems like a good idea, especially with Barca's key offensive strategy being control of possession. Only problem is, this could make attacking much harder for them.

Generally speaking, defenders tend to avoid giving up corners. And if you need a good reason why, look at what happened when Barcelona gave up a corner against AC Milan in their last Champions League match. Most managers will prefer for their players to kick the ball out for a throw in or up the field, depending on the position of the attacking teams defenders. Which is fine and dandy because what happens when you give the other team a throw in or kick the ball upfield away from their defenders? They throw the ball into play and regain possession, or the defender runs after the ball and the attacking team regains possession. What does this mean for Barca? 

First off, Barcelona and every other team in the world has scored a goal or gotten a decent scoring chance because the other team has failed one of those throw in clearances and put the ball infront of the attacking teams striker, who, unless he's Fernando Torres, will usually put it away with ease. Another example branches off the same principle, when Dani Alves puts in a cross the defenders try to head it out of the box to start some sort of counter attack, and once again, they sometimes mess up and the lucky attacking player to whom the ball lands, places it in the back of the net. And lets please not forget about the whole possibility of the defender just heading the ball to a Barca player 25 yards out, which once again ends up in regained possession.  

Don't get me wrong, I am not saying that Barca should whip in every corner hoping that the defender makes a mistake, that would be stupid; what I am saying is it will be easier for defenders to put an end to barca attacks. Players who are defending Barcelona have an easy way out of every high ball, and every ball played through the middle. If they just tip the ball out of play with their heads, or kick it out in a tough position where they are afraid of a possession loss leaving them in a vulnerable position. Barcelona are giving the defence an easy alternative for ending the play and getting the time to regroup. 

What is the solution? Personally, I believe that Barcelona should whip in every 3rd or 4th corner. They already get a lot of them during the game, and playing one or two long with the possible chance of losing possession might be worth it. At the moment I don't think it's that big of a problem, but I fear that teams might catch on. After all, it isn't like their long corners never amount to anything, just look at Dani Alves's goal against Getafe last year, or Puyol's against Germany during the world cup (technically that isn't Barcelona but the cross was delivered by a Barcelona player and put away by a Barcelona player). I would post a link but i'm not really sure what I am and am not allowed to do because I'm new to this site, so hopefully someone can give me an answer in the comments. Anyways, looking at the number of corners Barcelona get in a game, I think they can play a few long. This could even be beneficial because it will help Barcelona with their corners, after all, they might get the chance to capitalize late in the game like Milan did, and we'd all hate to see them mess that up.