There used to be a site called SpaceFinder by Fractured Atlas. It was great for finding spaces. It looked like what this Seattle Space Finder website is like...but not quite as nice.
When I (Travis) am booking a rehearsal studio, I would go through one-by-one a list of sites I had bookedmarked in a folder to see what is available.
The goal of this site is to be a slight improvement over that folder.
--Travis Amiel