Today,I registered facebook,and I found so many interesting applications in Facebook.Facebook is the biggest community website in the world,including more than 1o billion photoes of their members.I wanted to find a friend whose native language is English,so we can talk in English.I searched the "Groups" with keywords "Chinese" and "Mandarin",and I got satisfied results.I sent the joining request to those want to learn madarin,and I got the feedback message!Just in a couple of hours,I have already added 5 friends.