This article discusses some of the claims of the earlier and later versions of the Contemporary Theory of Metaphor (CTM) and addresses some of the criticism that has been leveled against it. It is argued that much of this criticism arises from common misconceptions as to the real claims made by the theory. However, CTM is still in need of further exploration and empirical support. In this connection, we identify some areas where research is still needed and supply our own (...) developments. We argue for a more complex classification of metaphor types, which takes into account various complementary taxonomic perspectives, including the nature of source and target and the genericity and complexity of the metaphoric operation. We also explore metaphor in relation to cognitive prominence and conceptual interaction issues. Finally, we deal with the problem of constraints on metaphor and make a proposal for three complementary kinds of constraint. (shrink)