If you've been using Confluence for a while, you've certainly noticed this wonderful collaboration tool has a few social features. I'm talking about Likes, Statuses, @mentions and Personal Spaces. But overall, it doesn't really measure up to dedicated Enterprise Social Networking applications. Today this all changes. Introducing Blue, the ultimate social networking add-on for Confluence. In this post, we'll introduce all the key features of Blue, version 1.3.5 which we released today on the Atlassian Marketplace.