I hope I'm allowed to post this. But there's this really neat (kind of a speed type) memorizing/testing site for learning languages and you're able to create a group and kind of do it with your friends.
If anyone is interested in trying out this site or my little group thing in the site, go here:
http://www.memrise.com/group/6498576/
It's really useful.
Cool!
My Korean is at a low-intermediate level, but I would love to help others with their Korean studies and practice together.