berteh - yes, big help. Worked fine with one remaining issue.
Whether i use that plugin's widget or XYDAC's taxonomy term list (which just lists, not as a pulldown), i get the following behavior... the website (www.PostAndCoach.org) has both public and private posts. Yes, whether one is logged in or not, both taxonomy widgets only list as selectable options those items appearing among the set of public posts. You do not see nor can you select options that only appear among the set of private posts, but of course that is needed. The good news is that if you do a search (on one of the selectable items), you do correctly get both public and private posts if you are logged in.
Any idea how to get it to list as selectable options both public and private?