Do you find it strange that I'm a real life lurker?
I'm not really sure. Why do you consider yourself a lurker irl?
I'm your average guy in your neighbourhood. I walk around doing business. Occasionally, I do something sudden in public which causes people to turn their heads around in surprise, but I don't care much about that.
You should probably refrain from lurking so people don't think you are a criminal. You might frighten some people with your lurking.
I don't think I should worry about other people being scared.
Just understand that people my find your behavior a little creepy. Maybe you could talk to people that you come in contact with. It would make you seem a little more friendly.