From the author of this site on informal French:
"L'argot is a very casual way of speaking French. You should not use it in a formal situation where politeness and good manners are required. But with good friends, with family, in a relaxed context, you can use it to create a more friendly linguistic environment. But beware, not everybody has the same understanding of l'argot."
Transcripts, mp3s and dictations.
