The /r/askhistorians subreddit has given me an inordinate amount of pleasure over the past decade. This is a heavily moderated forum for academic historians to write well-sourced, long form answers to specific questions about their expertise. Where you can get a thoughtful answer from one of the few dozen people on Earth knowledgeable enough to supply it.

I was recently able to answer a question on “sandpaper and files in the Middle Ages”, and it was truly an honor to meet the rigorous bar for commenting in this forum, and to give back a small nugget of information to the community.