Google Wave is coming soon! It's Google's new products!
As we see Google is going to change traditional Internet Concepts! This time the Email concept is on the target.I think its the continue of 'conversation' concept which first provided in Gmail.A Conversations collects all the mail forward and replies into one conversation.which is so usefull for tracking!
Now! Google engineers see that the common event of each email forwarding and replying between users, is like a Wave riding! So from now you can ride the waves instead of forwarding and replying the mails! ha?