I think it's kind of funny that this post mentions nothing about, you know, actually building a product.
Ironically I may use some of this advice when I move away from SF and to Seattle -- the opposite of what Andrew did -- later this year. :)
Sitting down and just building something cool without the above is generally a recipe for disaster.
Doing all of the above without building anything is a bigger recipe for disaster.
All that other stuff is important, but at the end of the day, someone who has already built something others want will be way ahead.
"Build something people want."
Not "Meet people who want something"