Here’s a great video you might find interesting:
Don’t discount the first few minutes of the video, Perry talks through the basics of social media, then puts together a flow of how the Marketing side of it works. He compares social networking websites to a Party, your blog as your Home. When you go to a party you don’t ram what you do down people’s throats. Rather you are nice to people, you may even invite them to your home and possibly tell them what you do. The people you meet will remember you for this and recommend you to their friends, extending your reach way beyong the few social contacts you have made.
Moral of the story: Be Cool .. interesting concept.