What improvement does litecoin have on bitcoin, or is it just a clone? If just a clone it is fun to try and get in on the bottom floor of something, but with the way bitcoin is growing and gaining attention, there would seem to be no need for litecoin.
The biggest difference is speed. And for most of us that's all the difference we need. My transfers are a few minutes instead of up to an hour (or longer). Once merchant tools get developed the speed factor will be huge.