According to mythology...no.
I haven't heard of a show about vampires in San Francisco. Perhaps you are confused, and mistake this for the show, Moonlight, on CBS, about vampires in Los Angeles. It is a very good show, and you should check it out if you're interested in vampires.
Vampires were never invented Like girls and celebrities Vampires always show up late. Its considered to be fashionable. Last time there were none here until about 11:15.
Vampires
Candid Camera
The vampires who show up when the Cullens play baseball are Victoria, James, and Laurent. They are nomadic vampires who are passing through the area and become intrigued by the Cullens playing an intense game of baseball.
Dance of the Vampires
Jordan Johnson Show - 2009 Vampires 1-2 is rated/received certificates of: USA:PG-13
Jordan Johnson Show - 2009 Vampires 1-2 was released on: USA: 13 January 2010
Vampire Diaries wasn't spoofed in Vampires Suck. they were spoofing twilight
The show is Blood +
You can show your face on video. It can be done through a camera in Gmail. Camera can be either inbuilt or a webcam.
No. Vampires show up when it is necessary for them to do so. They aren't always out to kill. Sometimes they go to movies, dance parties, university classes, public performances, etc.