This question was posted in response to the following article: http://help.adobe.com/en_US/photoshop/cs/using/WSfd1234e1c4b69f30ea53e41001031ab64-7760a.h tml
Not good. Even when checking "Visible Layers Only" it exports ALL the layers. Also got an error "Could not complete operation. There are no user slices" for every layer. There has to be a better way to give psd layers to a web developer to create a web page!