It actually happened to me a couple times now and I never know how to react.
First time it was a young lady working in a coffee shop and she told me that her and her boyfriend watch my vids all the time. I got a free coffee out of it.
Second time was at the local bike shop. One of the employees recognized me. We now talk all the time and some time this year he is letting me take his R6 out for a spin.
Third time was when I bought my swing arm stand. I called the guy who was selling it in the classifieds and he said he would drop them off. He showed up and after 2 min of talking he says "Holy SH&T, I know you, your WildBill" an hour later of listening to him tell me all about his motorcycle and trip he gave me the PitBull stands for $10 instead of the $40 he was originally asking.