Second this. I lived in frisco for a year and while it's never as bad as they make it sound, it was pretty bad looking back. There were shootings at the intersection our office was located at. Car breakins were not a big deal and just accepted. I'd see fresh pieces of glass window on my walk to work each morning. And I wasn't even living in the worst part of town aka the tenderlon.
I've only moved to NYC few months ago and never felt remotely as threatened as some of my late night walks in SF. Still I keep hearing NYC has its own share of bad hoods but my guess is in proportion to its overall size, they comprise a significantly small % of area than sf.
I remember leaving it very late to book a hotel for JavaOne once and being put in a hotel in what turned out to be a rather "interesting" location. My first hint that something might be up was when the taxi driver at the airport took one look at me and asked "Do you really want to go there?".
The second hint that things were going to be interesting was when the guy on the front desk told me how to get to Union Square - the hotel was on Geary St. and I thought I knew SF reasonably well. He proceeded to tell me not to walk directly along the street, but to walk up the hill a bit then walk across in the direction of Union Square.
It turned out that during the day this advice wasn't really required but at night it definitely was! I only walked back once and took taxis back after that.
This was about 10 years ago - don't know if the area is more civilised now but it was pretty scary then.
Proper names for SF include: San Francisco, SF, the City, and occasionally San Fran. 'frisco will make you lose all credibility around here.
Two areas of SF are pretty bad: Hunter's Point / Bayview, and the Tenderloin. Personally I never really go there on foot, and I'm fine. If I must go there, I'll drive of catch a cab.
I've only moved to NYC few months ago and never felt remotely as threatened as some of my late night walks in SF. Still I keep hearing NYC has its own share of bad hoods but my guess is in proportion to its overall size, they comprise a significantly small % of area than sf.