I already know about how some people have Immersion and others don't. I am one of the ones who doesn't, but I love doing it! Does anyone have links to Immersion articles (Spanish to English or English to Spanish) that I or others can use?
Basically, it's a feature that lets people upload documents and then people (including the original uploader) can translate them into another language. It's really useful for when you have finished a language tree but want to keep practicing in more of a real world situation.