Translation of liberal

One of the most difficult problems I have (and I am sure that others have it too) is getting used to the superficiality of the life in the US. To be superficial means to me not to be able to recognize.
My experience at Vocabulix has been great. I really think that this site has helped me a lot in improving my Spanish language skills. I believe that I could learn here several other languages.
Yes, depending on demand. Vocabulix is a free service, but no one wanted to finance the German voices yet, which cost a little bit, so we started with Spanish and English which has higher demand.