I have a line in my privacy policy about it. Since my site deals with cars, and thus, a general auidence of people over the age of 16 for people into cars, I am 'off the hook' for the most part. I think it would be rare for a 13 yr old to want to learn about motor swaping. :) Be that as it may, I describe it. Have a look: http://www.hondaswap.com/about.php#privacy and feel free to borrow ideas. -Brian