This post claimed that JournoList was limited to just journalists. That assertion is false.
Political operatives on Journolist worked to shape news coverage
Despite its name, membership in the liberal online community Journolist wasn’t limited to journalists. Present among the bloggers, reporters and editors were a number of professional political operatives, including top White House economic advisors, key Obama political appointees, and Democratic campaign veterans. Some left government to join Journolist. Others took the opposite route. A few contributed to Journolist from their perches in politics. At times, it became difficult to tell who was supposed to be covering policy and who was trying to make it.
I haven't followed this story at all, except on here, but it sure seems like there is good reason to think that the collaboration on this listserv isn't just water cooler talk.