Due to safety reasons in the community, lots of unknown pedestrians and cyclists pass my house in a day. Also, probably due to the street sign and the natural windbreak my fence provides, people use the sidewalk in front of my house to meet each other, wait for rides, etc. most of those people are strangers though some use it often enough we recognize each other and wave now. I wouldn't be put off by someone reading a book as they are probably waiting for a ride, or kids playing with sidewalk chalk as we have one of the few sidewalks in the area.
Strangers are always parking nearby and doing car mechanical work, primarily because one of my neighbors is a mechanic who walks them through the process. Sometimes he isn't home and they use his tools, as it's in broad daylight I assume by pre-arrangement.
I have seen drug deals go on around town, but none near my home at this point, fortunately.