Ohhhhhh. Wow, yeah, if that's the case that definitely changes it more. I didn't realize that very distinct difference, I missed that part in the article. I didn't know LinkedIn had "work accounts." I just assumed all the accounts were "personal." I just thought it meant like they were messaging from their normal "personal" profiles and because he had "x" company set in his LinkedIn that meant he was "representing x company" in this context. This makes a lot more sense now knowing that detail. Good catch! :)
While I certainly think of LinkedIn as largely a professional thing (and would never send these sorts of messages regardless), some of the discussion further down in the story seems off-base. At some level, I'm associated with my company in all non-anonymous or pseudonymous social media but beyond that level I'm not sure why LinkedIn would have some special status because LinkedIn likes to position itself for professional networking.