Get LinkedIn!

So I've been hearing people talk about their profiles on Linkedin.com
and how amazing it is. I am still unclear about how it works, but seems like another networking site. So I decided to get LinkedIn! and made a profile. Now I have another site with my resume on it. Hopefully this scores me a job! I have posted on monster and that worked well. But I guess I will find out on Monday how LinkedIn can help me.
www.linkedin.com/in/stephaniechiu