Verbling is a language learning service that launched back in July. When it launched its purpose was to match native speakers of Spanish and English to help each other learn a new language. Since then it has added support for French, Italian, German, Japanese, Mandarin Chinese, Portuguese, Arabic, Hebrew, and Russian.
The most significant upgrade to Verbling is the recent addition of structured classes hosted through Google+ Hangouts. The classes are held at scheduled times and are taught by certified TEFL teachers. You can join the classes live or if you miss a class you can go back and watch it later on Verbling.
Verbling from Verbling on Vimeo.