It would probably make a good addition to that page, for sure...
For the time being, you can always invite them from here as well:
http://apps.facebook.com/chessfb/
(Use the "Invite more friends..." link below the "challenge" button.) Hope that helps!
I had the option to invite my facebook friends when I made the account. Now I can't figure out how. I went to Members > Invite Friends, but I see no Facebook option. Advice please?
-Thanks