Likewise... I've been watching him from the sidelines since the shoes/hacketyhack days (a Ruby-based, cross-platform GUI toolkit and a programming environment

Likewise... I've been watching him from the sidelines since the shoes/hacketyhack days (a Ruby-based, cross-platform GUI toolkit and a programming environment for beginners built on the latter. He was leading those community-maintained projects after _why vanished from the Web in 2009). He's been consistently excellent. Before Rust, he also had a REST-based stint, writing about things like HATEOS. A great loss for Rust, since he probably won't be able to dedicate as much time to it, and for Mozilla. Of all companies, I would have expected the Mozilla Corporation to dearly value the work he was doing...