I’ve updated both the vBFOAF RDF metadata producer and vBFriends social network browser extensions for vBulletin 3.5.
This has been useful because I’ve learned a bit about how the new “hook” system works in vBulletin 3.5, and can use this for my next two add-ons that I’m planning to implement next week: a forum post tagger (using Freetag) and a SIOC RDF metadata exporter (which will also export these tags).