You see a lot of w and ww and even www in Twitter and casual chat. What does it mean? I've always thought it was わいわい but never found out. How is it pronounced? Here's an example from Twitter ...
If you follow any Japanese speakers on Twitter, you'll almost certainly see them use なう at the end of a sentence, to say "I am in this place/doing this thing now". Where does this use come from? Who ...