The more business and social media sites at which you are connected , the more exposure you get.
People can find you through your friends, groups in which you participate, and your website.
I'm quoted as using my Linkedin status to tell my clients and friends about estimated tax deadlines. I'll post similar status updates at twitter, facebook and other sites.
I have been on Linkedin since 2003 and have known for many years Krista Canfield a LinkedIn spokeswoman who is also quoted in the article. Krista informed me about the opportunity to speak with the Times reporter.
http://www.nytimes.com/2010/09/30/technology/personaltech/30basics.html?src=busln