Internal The top 5 stories on internal communication From how not to use Yammer to signs you’re a communicator—and a whole lot of C.R.A.P. in between—here’s what caught your attention this year. By Ragan StaffDec. 23, 2011 SHARE To read the full story, log in. Become a Ragan Insider member to read this article and all other archived content. Sign up today Already a member? Log in here. Learn more about Ragan Insider.