Thanks for the information, Jim.
One of my failures here was in not understanding that the forum search limits the results to the section being browsed. Before I posted and while viewing this topic, I copied 'pfflowd' and pasted it into the search field – I found only the posts in this thread. After I read your information, I did the same search while viewing the main page of the forum -- this time I found all of the threads on pfflowd. Another lesson learned.