@jnpn Wow, that takes me back. It has me posting from @rheged.dircon.co.uk, which I *think* was my first #Linux daily driver. It might be the last Acorn ARM (BSD 4.3) machine I used before Linux, but I don't remember for sure.
@jnpn Since 1983 or 84. Started with Acornsoft #Lisp on a BBC Model B, playing with experimental theorem provers; then Interlisp, Portable Standard Lisp (which I think was very underrated -- I loved it as a system to work on), some Common Lisp, and for the last fifteen years mostly #Clojure.