Hashtags are critical here, I strongly suggest following the #Seattle and #PNW hashtags at very least. I'm up in north King County ( #northshore represent ) but also tag with Seattle because that's basically what you've got at the moment. xD
(There are also Portland tags, they're what you'd expect.)
Also also, I have a few general getting-started posts that have been reasonably popular. They're all linked to from here and you might find some of them helpful: