Top social media and marketing stories of the week:
QUESTION OF THE WEEK: Are we keeping too much of our brand relationships on third party sites?
Apple Launches Air and Discontinues MacBook
http://news.cnet.com/8301-13506_3-20081017-17/apple-quietly-discontinues-white-macbook/
Google+ Hits 18 Million Users
http://www.apex-mart.com/web/google-hits-18-million-users-can-it-be-stopped/
Amazon Lets College Kids Rent Textbooks
http://www.amazon.com/gp/feature.html?ie=UTF8&docId=1000702481