The rust-by-example people are really happy with example contributions!
The team has so many other obligations in the rust community that the examples don't always get the love they deserve.
I have my own threading example in the queue, because I thought we could use a better one.
So, if you're playing with the examples, and think you can do better/more-challenging/more-up-to-date, feel free to open a pull request!
So yeah, that's one of the things I was working on this week. I'm also hoping my fix for quick-links in crate headers will be accepted for crates.io (sorry for breaking it, logged-in people!), and I'm teaching a co-worker of mine how to Rust