ngx_pagespeed, my port of mod_pagespeed to Nginx that I've been working on for a couple months, is getting to where someone adventurous could start using it. It's now on for jefftk.com [1] and I haven't seen any problems yet, but if you test it out let me know if you run into any!

(If you'd rather wait for a beta release, let alone a stable release, that's probably wise. This is still a very immature port and there could easily be major problems. If you want to help test, though, that would be helpful!)

[1] Which meant switching from Apache to Nginx. This is frustrating because I can't figure out how to make nginx redirect .../foo.html to .../foo without redirecting .../bar/ to .../bar/index.