They sold their restaurant, but still have the catering business. They have also opened a TV cooking show themed private party venue just outside Chicago (HBTV) where guests take turns in front of the camera as host.
While I do watch a lot of the programming on FN, TNFNS is one I really don't care for. Apparently it's very popular..but I can't quite figure out why. I don't find most of the people they select very interesting.