There's been machinima created as guild advertisements and event advertisements. There's been machinima created as in-jokes for guilds, or nice little send-offs of a group's raiding progress. The CBC Montage, however, is the first machinima episodic news update for a guild that I can recall seeing.
Creating by the Mooing Druid for her guild, Crimson Blood Clan, the CBC Montage does several things. First, it introduces new members to the family. Second, it allows the guild to spotlight a particular member. Lastly, the additional clips and sections give the guild an opportunity to have fun together, and create something they can all enjoy.
If you have the time and know-how to do something like this, I have to imagine what a wonderful tool this kind of well produced news reel would be to any guild. My hat's off to the Mooing Druid. The CBC Montage is awesome.