Both the Wednesday Group and Journolist are avowedly political enterprises designed to coordinate and effect political activism and political action.
But Norquist and the Wednesday Group are honest and forthright about what they are doing. The Journolisters, by contrast, continue to dissemble.
In fact, insofar as I can tell, Ezra Klein, Matthew Yglesias, Spencer Ackerman, Michael Tomasky, Jonathan Chait, David Weigel, et al. have yet to acknowledge the explicitly partisan political purpose behind Journolist.