Eliminating personal information

I have an ATV2 that jail broken and working fantastic.  I'm going to give it away to my sister, and I'd like to erase all personal information.

We both have kids and I don't want any future headaches with them getting into my netflix, etc.  I'd like to preserve the JB, otherwise I'd just get her an ATV3 or whatever is coming next.  

Some people have had success with doing a RESET on atv and it removes information. If that doesn't work then you can change your passwords for NETFLIX and others. Or uninstall and reinstall those programs.