Very rarely do I see such a good idea implemented so well. The site, www.livemocha.com, starts off with some basic language lessons similar to software you would purchase on CD-ROM, but then it takes your writing or recorded audio in a foreign language and asks native speakers to evaluate your work. In return, you are asked to evaluate the work of others in your own native language. The site is heavily dependent on Flash, but it worked flawlessly for me. Did I mention that it was free? It may not be as good as tutorial session over skype, but those cost $20 to $40 per hour.