Originally posted by KefirI bumped the "Works with" to include 4.0 and it still seems to work. You'll need to enable "View" > "Toolbars" > "Add-on Bar" though.
The current RHP addon doesn't work in FF 4.0 :-(
Has anyone figured out a workaround? I can pin RHP games page as App Tab, but the page doesn't refresh itself like gmail or facebook would.