I have a feeling litecoin was pumped by chineese exchanges (okcoin!) and because its such a small market and there are so few exchanges, the rest of the market just jumps on the bandwagon.
BTC-e and Bitfinex did have, and have almost 80% of trading volume. So your feeling tells you the 10% Chinese trading volume managed to pump. Cryptsy, Bittrex and co make up the rest in total over 50 exchanges.
BTC-E LTC/USD 31.64 %
BTC-E LTC/BTC 23.77 %
Bitfinex LTC/USD 16.52 %
Bitfinex LTC/BTC 6.52 %
BTC-E LTC/RUR 0.43 %
BTC-E LTC/EUR 0.36 %