Foursquare users may want to check their privacy settings. I wrote all about it on BlogHer.
40 Excellent Examples of Attention to Details that Fill Us with Delight. It’s the little things that make a difference. From Betterment.
I know Guy Kawasaki is a huge name in the social media business, and this method would not apply to a relative unknown. But I find it fascinating that he did this and that it worked so well.