Will you be allowing others to write add-ons once this goes public release? I do a lot of FB developing. Currently building a site that uses XF fully within the FB canvas, sort of like the vB social app in beta. But on mine, everything stays within FB.. Clicking profile leads to wall, following sends a FB friend request, conversations get sent to FB's PM.. etc. So I know FB's SDK pretty well. I might need a bit of help understanding how the high score system works on the XF side. Put pushing the data would be pretty easy from there. I might just do this if you allow 3rd party add-ons.