my first blog post

I'm writing my blog and it is already after the due date........
This class is about social networks and I've read some articles about social networks.
and now I figured out that I know nothing about social networks.

I've been using facebook and mixi, Japaneses social networking thing.
But now I am asked to create an account in a social network by the company I will be working for. This Network is internal network and only people who is accepted by the company and people who works there can see it.

The problem I'm facing is that now they have asked me to upload my picture and profile.
For facebook and mixi I've uploaded my usual pictures.
But for this social network, should I post something professional? what kind of things can I post?

I always thought social network is for fun not for formal use.....
I know how to use it for fun but I am new to social network for formal use.

Have anyone used social network for a company?

This is strange for me......

I hope by the end of this semester I will figure out the way to use social network for formal use too.