I'm playing around with the idea of traveling to SF to try to find a job at a tech startup, and I have several questions.

Does the job market in SF live up to the hype?

How receptive are SF startups to people either dropping by or calling to setup meetings in town?

Is a week enough time to make the trip worthwhile, get a feel for the area, and meet with a lot of companies?

If I go the AirBNB route, what neighborhood should I try and stay in for best walk-ability to the startup heavy areas? (Alternatively, anyone want to rent their couch to me for a week? =)

Thanks for reading! Also, any other tips or links you want to throw in would be much appreciated. Things like http://paulstamatiou.com/atlanta-to-san-francisco-moving-cross-country and http://al3x.net/2009/10/04/so-youre-moving-to-san-francisco.html