I ran across this article on one of my group discussions with LinkedIn. I think the article a good synopsis of what to do and not to do with LinkedIn. Some very good learning here if you are not already doing these things instinctively.
You are your Brand and how you present yourself, especially with a tool as accepted as LinkedIn, is very important to your personal branding effort. Take a look if you dare. The article was posted on Forbes.com by Libby Kane on March 4.