Susan, I can't say that showcases specifically worked for me, but I can't say that they didn't either. It is definitely exposure for your shop, which is always a good thing. I didn't get any sales the say that I had my showcase, but my favorites jumped for the day. I did notice that after I had the showcase, about a couple weeks later, I got a lot of interest in my shop, and as a result made a few sales. I've noticed the same with the search ads, I haven't been able to track any direct business from them, but when they are up the interest in my shop is high, and I've received a few sales with time. So I guess be patient. And renew your listings. I think it also helps to add at least one new listing per week.