Pinterest made algorithm changes in February 2016 that negatively impacted some bloggers' traffic from Pinterest. The changes focused on improving user experience by prioritizing boards with high engagement over those with little interaction. To increase engagement, the document recommends interacting with other Pinners by liking, following, and repinning their content in addition to your own. It also suggests deleting older, lower quality pins and following an 80/20 ratio of repinning other content to your own.