How many online identities do you have? How are they different from one another?
I have about 6-7 online identities...

-4 for e-mail ,including Yahoo, LU, Hotmail,Gmail)
-1 for Facebook
-1 for Xanga
-1 for THIS BLOG
- SOME for online game like restaurant city, Luna etc...


What are some benefits of expressing one’s identity online?

- online identities can protect oneself.
as we do not need to use our "real" identity in normal life... for example, we do not have to use the real name or information of ourselves.

- feel free to speak out

What are some risks?
- As the delusion that we have completely freedom on the internet or we believe that no one know who we are, people may easy to act crime and even some of them do not alert...

- Also, open a AC on the internet always use some personal information, may be some information will be stolen. OR we open AC too easy, thus we will not aware that we give some personal information for that owner...