"[The] world of B2B content has transformed into a limited marketplace of ideas. ... Twitter -- at least in most B2B verticals -- is a media phenomenon. Most tweets come from journalists, marketing execs and public-relations pros. If you're a reporter for Paper Bag Weekly walking the floor of the Paper Bag Expo trade show, you're likely find dozens of folks tweeting. But they will nearly all be someone from the media side of the paper bag industry. You can read tweets from flacks and tweets from hacks, but you won't find a tweet from anyone who actually makes a paper sack. The obvious exception to this is in tech."