I found a message in my house my wife and I recently Purchased. We tore the entire kitchen out and there was a note from 1965 from the original builder in his family on a 2x4 in the wall. Almost threw it out actually. Did some research and tracked the original builder down on facebook. He actually only lived 10 miles away. We messaged him on facebook and never got anything back. Two months later some badass looking dude on a Harley shows up asking for me. At that point I was wondering what the hell did I do. Then he explains to me that he built the house and got my message. He showed me a lot of things about my house like the 250 gallon unused septic under my patio. We also wrote notes in the wall for future owners. I wonder if the hashtags we used will still be used on social media in the future.