A casual, friendly exchange of fossils is a great way to expand a collection, and the results usually exceed everyone’s expectations.      Occasionally though, things can go awry. Poor outcomes can usually be traced to poor communication and other aspects of human nature. It is this possibility, and its impact on the Forum, that we wish to address here.    TRADE AT YOUR OWN RISK: There is no recourse through the Forum for bad deals. Know who you are trading with.