[kirakira]

Rosetta Stone is great if you are looking for a travel phrase book but it's pretty much useless at teaching someone how to speak a particular language. It presents all languages in the view point of a English language speaker with total disregard to any cultural sensitivities.

The most obvious is the over zealous use of pronouns in Japanese like 彼 and 彼女, 2 words which is hardless used in everyday speech and comes out as rude if overused.