PR Tips from the Pros: Katherine Barna, Tumblr's Head of PR

PR Tips from the Pros: Katherine Barna, Tumblr's Head of PR: This week, we’re bringing you even more PR advice from the pros—this time, straight from Katherine Barna, Head of PR at Tumblr. Check out our primer for using Tumblr to promote your brand, then read on for Barna’s expert tips for making the most of the social media platform.