I bought a one-day pass ($4.95) and was able to search their archive for a little over 24 hours. The search is based on OCR text recognition, so it's not perfect, but it is very good. I turned up a lot of obituaries for distant aunts and uncles, and a little infant I would not have otherwise known about.
One search I had luck with was "Surname NEAR town/county NEAR died." This turned up the obituaries of entire families in certain areas. Here are a few I found: