I know that many of you know this, but Stackexchange is a collection of sites for posting questions and getting answers���hopefully. 
math.stackexchange.com is the one of the sites designed for
 mathematics questions.   In the stackexchange world, ���tags��� are classifications.  They allow you to search for, or watch for, questions that fall within a given category.  Until now, questions about imprecise probability couldn���t be classified as such.  (I
 just got the tag-creation privilege and created the new tag.  Others have already added to the description of it, though.)
 
A while back, it was suggested on this list that one might ask question about IP on math.stackexchange, and then post a notice about it to this list.  That way, the question and its answers would be preserved in a public place, but people on the
 list who don���t check math.stackexchange regularly would find out that there���s a question they might consider answering.  Not all questions asked on this list are a good fit for math.stackexchange, but some are.  Perhaps the existence of the imprecise-probability
 tag on math.stackexchange will make a small contribution to spreading information about IP.