This is the second part in a series on how LinkedIn has evolved the Endorsements feature. Part 1 of the series, which discusses the basic existing Endorsements infrastructure and the new success metric developed to measure Endorsements, can be found here. As explained in Part 1, the Endorsements feature has two main components: one for suggested endorsements,...

If you’ve used LinkedIn, you likely know about Endorsements. Tens of millions of professionals around the world have pressed the “Endorse” button, sharing more than 10 billion skill endorsements with their connections. When LinkedIn first launched Endorsements, the goal was simple—to create a way to allow others to recognize people’s skills. While many people on...