Does anyone know of any good (free) language learning websites?  

first of all you need to find out a reason to learn language.because once you learn a language you need to use it not to forget it.so find a language which you are going to be in touch with. for example if you are going on a missionary tour to india,where iam from, you can learn one of the language, there are more than 30 of them in india alone.so you will be able to use it atleast say one year you are going to stay there.so if you are just curious learn a few words which commonly used in another lanuage,like how are u?,have a seat,what is your name,which way do i get to the next hotel, or place, and the like. so find somebody who you can speak with before you can learn a language.
Anyways: http://www.word2word.com/coursead.html

i'm also learning languages, especially spanish. & i found a website which can help me learn spanish & other languages. the benefit of this website is you can put your own words then select what language you want to translate in it, then that's it.. no hussle! just look for 'google translate' sorry can't copy & paste the link coz there's a special character in it.. goodluck! :D