Social Media in the Serendipity Economy. The following questions were asked during the Yammer Finding Value in Serendipity Webinar held, February 28, 2012 [No longer available. Yammer is now part of Microsoft.] The Storify tweet trail was mined for this report [Storify has ceased operations]. Yammer posted a blog about the paper and the webinar but it has been retired by … [Read more...] about Lessons from the Field: Answers to Yammer Customers About How to Effectively Use Enterprise Social Media in the Serendipity Economy