Put it on Cascade's stolen bike list too! http://www.cascade.org/Community/stolenbikes/index.cfm

and put your posting on their message board as well

- a few other shops you might want to alert (that buy and sell used bikes)
20/20 Cycles on 20/20 E. Union
The Velo Shop 12th Ave on Capitol Hill
BikeWorks in Columbia City
Second Ascent in Ballard