I tried out DDG and it didnt work

After reading the "Giving up on Google" post on robsheldon.com I decided to give it a try.

Unfortunately, my first search, "breast cancer", resulted in no relevant results. Searching for "breast" explains that "safe search" is on.

1. Why, in 2010, would something called "safe search" block breast cancer queries? I could understand if it was 1997...

2. Why am I only alerted if all my keywords are on the black list? Shouldnt people searching for "breast cancer" know that 50% of their query keywords are being filtered out?