It would be really nice if the Preflight Panel (or another tool) could detect text frames with no text in them and give the user an option to delete them. Empty text frames don't cause that many problems in print, but when you export to ePub, they often create some odd pagination and other errors. I think they usually happen because I bring in a new story and it kicks out 15 pages. Then I highlight the text and apply a style and the text shrinks to 12 pages, but leaves behind empty boxes. If I don't go back and delete the blank frames on pages 13, 14, and 15, they stay there, and if you bring in a new story, you often overlay it on top of those empty boxes.