I've been freelancing in Austin (doing mostly PHP and Python web development) for about 5 years now. After living in Texas my whole life (now 30), my wife and I are interested in relocating.
We visited Portland in March (to experience the rain) and it seemed like our kinda place. However, I don't know much about the web dev community over there. Are there many companies hiring? Startups? Agencies? Are interviews similar to Silicon Valley with lots of algorithms/data structures questions? I figure salary is similar to what you would get in Austin, but I always hear bad things about the job market in Portland, such as don't consider moving unless you already have a job lined up. Either way, I will probably sublet a room in late June/July to check it out. Anyone have the inside scoop?
http://siliconflorist.com/jobs/
Salaries are on the lower end, but so is cost of living here. Lightbox to avoid SAD not included.
The Portland Seed Fund is launching this summer, which might bring some sexiness to the startup scene. COLORlovers just got 1mil and so did ShopIgnitor a few months back. So there is some action here for sure.
Portland is a big digital media agency town. Webtrends is here and lots of SEO/online marketing shops. GetClicky is here as well (go analytics!).
Not sure about interview questions.
I just hired a PHP dev strait from school at 50K/year. Hope that helps. Good luck.