For a language that was written by Mozilla, I find it very annoying that they steal my browser's built-in ctrl+f functionality that I'm perfectly fine with using. Also, my vimium plugin doesn't work. This is the first time I've encountered something like this. This better not become a thing.
The forum software has nothing to do with either Rust or Mozilla. It's Discourse ( http://www.discourse.org/ ), and personally I agree that it's kind of a pain. :)
Please use something different. Something utterly broken like this (keyboard navigation?) casts a bad light on a project that's - at least mentally - connected to Mozilla.
This is a comment on http://www.discourse.org/ , the software used to drive the internals.rust-lang.org forum, which is not written in Rust nor developed by Mozilla.