How important is it to have identical speaker cable length?


I have a situation where my speakers are different distances from my amp. Would it be wrong to pair a 3-meter cable to one speaker and a 2-meter cable to the other or is it really just a theoretical issue? Many thanks in advance for your thoughts!

benchwarmer
You'll have no audible/sonic issues but you will most likely take a hit when you try and sell them afterwards. 
Electricity travels at the speed of light. Cables runs can be different lengths but I have always run the same length on both sides...just because. 
It's only important if you want to sell the pair.  You will definitely fetch less money for a speaker cable pair that's not the same length.
This has been debated many times and there already multiple threads regarding this.  My speaker cables in my office system are not the same length and there is absolutely no difference.