Foursquare helps its businesses with promotions: http://venturebeat.com/2012/12/06/foursquare-business-events/
What some presidents do when they have twitter accounts: http://blog.foreignpolicy.com/posts/2012/11/20/what_do_azerbaijan_estonia_and_rwanda_have_in_common
Why Nike made a custom pair of shoes for one 17-year-old boy: http://www.forbes.com/sites/markfidelman/2012/12/04/dear-nike-i-cant-tie-my-shoes/
10 things not to say to a social media manager: http://www.business2community.com/social-media/10-things-not-to-say-to-a-social-media-manager-0341056
Peoplebrowser still gets Firehose access, for now: http://www.sociallyawareblog.com/2012/12/05/peoplebrowsr-wins-round-one-against-twitter/