Targeting "influentials" vs. targeting everyone

Should you target the "influentials" or everyone?  Duncan Watts shines light on this important topic in this MSI article:
http://www.msi.org/articles/why-marketers-should-aim-for-ordinary-influencers/?utm_source%2013-Nov&utm_medium=Email&utm_campaign=WebSignupEmail

Guidelines for developing a social media strategy

Douglas Karr provides guidance for developing a social media strategy in this Social Media Today post:
http://socialmediatoday.com/douglaskarr/1920396/infographic-4-steps-social-media-marketing

Paying for retail purchases with mobile devices

You will soon be using your mobile devices to pay for the products you buy in retail stores:
http://www.mcx.com/
http://www.google.com/wallet/