My 9 week old doesn't nip, but does play bite. Whenever she does it to my hands I say NO in a firm voice and distract her with a toy. She really likes playing tug'o'war with a play rope. I also got her a nylabone so she gets her chewing fix. She seems like she is learning fast. A couple of times playing she got a finger and stopped and backed away. I think she was expecting the NO. I have been consistent and made sure any family member playing with her is too. I agree that consistency is the key. Also, find her some toys to take it out on too.
