Invite A Friend does not seem to work in FireFox (current) on OSX (current). Clicking on Invite A Friend does not cause the popup box to, er, popup.
Does work on Safari.
Has any else encountered the same? I don't have a Windows machine, so I can't text IE, or FF there.
The invite was received on Google mail's web version as not seeing a "From" address, only the outbound IP of the host. But the Apple Mail account saw the From address fine.