What do people think about ekphrastic poetry?

 I don't know what to think, but Laura seemed to capture most of the main points I'd bring up, if any. So, is it significant in any way that a poem should reflect on other works of art, or try to represent a work that is in itself a representation? Or is none of this about representation at all--just art doing what art does. Or, in this case, art reflecting art and (hopefully) creating something new and interesting.

Frankly, all I care about in a poem--as a reader or a writer--is that it ends up being good, i.e. it hasn't turned out to be a complete waste of time. Whether it engages a broader world of art, or any specific notable work, is completely irrelevant.