How Nathan used @steak_umm to revolutionize marketing on Twitter ... Weird Twitter vs. @steak_umm ... The complicated role that irony plays on Brand Twitter ... The bizarre trend of brands insulting potential customers ... Nathan wrestles with the ethics of advertising ... A brief history of Brand Twitter ... Nathan's massively viral tweet thread on Millennial mental health ... Twitter's crazy risk/reward ratio ... Nathan offers Bloggingheads some social media advice ...