Contacts
How can you get 7 people together if no one knows you want to play?
Seattle has a thriving face-to-face Diplomacy community, and if you'd like to get a game together, the first person you should get a hold of is Nathan Barnes (nbarnes99 at hotmail dot com), who can, in addition to getting you into a game on relatively short notice, also get you in contact with "anyone who's anyone" in Seattle Diplomacy.
If nothing else, join our mailing list to keep tabs on what is going on. This Yahoo list reaches a great deal of players across the NorthWest.