I'm more of a fan of the other comment, which was basically "don't use -f then"....

chromejs10 on Dec 4, 2011 | parent | context | favorite | on: How do I prevent accidental rm -rf /*?

I'm more of a fan of the other comment, which was basically "don't use -f then". Personally, when using that command at root, you should be pretty aware of what you're doing.