I, for one, do not think you have to have people in a photo for it to be a street photo. I photograph on the street daily. However, 75% of my photos do not include people. I consider what I do street photography anyway. However, my feelings wouldn't be hurt if someone said it wasn't. It's kind of a genre term that has lost its punch. It is funny to read each person's definition though... some really have a very narrow view of what the genre encompasses.