It just occurred to me that I hadn't looked for comments on this blog. I am sorry that I didn't see your comments until now, and thanks to everyone who posted one; I will check more often from now on.
Here's an update on the microwave steamer that I bought on QVC: it works really well for potatoes, which is the main thing I wanted it for. That is the only thing I have cooked in it, and I had trouble with it only one time. I checked the potatoes with a fork, and they were hard, so I cooked them longer, but I think they were hard because they were already overcooked, and I just made them worse. Most of them were ok, but some of them were too overcooked to eat, so I won't cook them so long next time. I am going to try some other vegetables in it next week with some herbs and garlic. Hopefully it will infuse the flavor into the vegetables. I will let you know how it works.