So do I.

One of my pleasures was finding someone whose Usenet post from 1995 I had saved on a computer and then backed up repeatedly over the years. The post was about a machine he built to automate letting his cat out and I recalled it instantly (even knew the filename I had it saved to) because his recounting of what happened was so hilarious. I sent him the file and the really weird thing was he had no recollection of the events. He was sure it was something he would have done, but really couldn't remember.

I'm actually surprised that I've only come across one other person I "knew" from Usenet here on HN.