EXtra credit.

I introduce my perfer site. my prefer site is face book. The url is http://www.facebook.com/. Now
i talked about how to use facebook. First you will see the log in box about yor id and password.
After the log in you will see a lot of different country user on the website. I think facebook is very
useful when you want communicate other country people or make foreign friends. Also it is possible
exchange information with foreign people.