Babbel (www.babbel.
com) is a language learning platform with entertaining exercises (including images and sound for the pronunciations). Learning lessons for italian, spanish, french, german and english include the obvious starting points like “Hello and goodbye” as well as special packages for making hotel bookings, skiing, etc. Users can find learning partners and communicate with other people from around the world.
Why Babbel It Might Be A Killer
Combines a useful purpose (learning languages) with communication features in a social networking style to apply the learned lessons. Easy to use and highly addictive. 
