The Social Commerce Timeline
socialcommercetoday.com/the-social-commerce-timeline-new-infographic-released-download
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
To promote their upcoming Corporate Social Commerce Summit (March 13/14, 2012 Boston) Useful Social Media have gleaned Social Commerce Today and Social Media Influence for factoids to put together a slick Social Commerce Timeline infographic, and here it is.