This mod adds Open Graph meta information used by FaceBook

Version History
---------------
0.1 alpha - First release - February 25, 2014
0.2 alpha - 2.6.1 release - December 10, 2014
0.2b alpha - 2.6.1 release (tag ends added) - December 10, 2014
0.3  - 2.6.11 Jan 13, 2015

Instructions:

Apply the mod and upload (in ASCII mode):

cgi-bin/yabb2/Admin/Modlist.pm
cgi-bin/yabb2/Admin/ManageTemplates.pm
cgi-bin/yabb2/Admin/NewSettings.pm
cgi-bin/yabb2/Admin/Settings_Main.pm
cgi-bin/Languages/English/Admin.lng
cgi-bin/yabb2/Sources/Subs.pm
cgi-bin/yabb2/Templates/Forum/default/default.html

In Admin Center -> Forum Settings -> General
Input your Site name (if not the same as your forum)
Input the logo you want to use for the Facebook blurb.
NOTE: The 'property' attribute in the meta tag is considered invalid by W3C for Doctypes other than HTML5. (But it still works as most browsers accept the tag.)