I just noticed something

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As I was looking thru a discussion I paid close attention to the little ads under each post.I know some of my freends are located and under each person that responded was a real estate ad for things and it seemed to be in the area myfriends were in. I do not know all of the responders, so I wonder if this was true for all. I do see that all the ads are related to the topic posted but I found it curious about the locations. Any thoughts or observations?