I attended a LinkedIn seminar and learned lots

The presenters challenged us to look at some useful tools.
1. Map out your contacts  Inmaps  ( find this at http://www.linkedinlabs.com/  - lots of toys there - resume builder s a beauty)
2. check out the dev  tools athttps://developer.linkedin.com/
3. Learn about LinkedIn at http://learn.linkedin.com/

I project that Linkedin is looking to monetize much more of the site this year.
Best quote of the day. LinkedIn is your own personal networking event.