Using the exact name of the product as the domain name.
"This blog is not affiliate with or endorsed by "product name".
According to this person, by using the above disclaimer, you can avoid copyright or trademark infringement.
I don't think this true as one company made me take down all my websites and transfers the domains to them a while back (I did not have the above disclaimer on my sites).
What do you think?
Founder of JVZoo. All around good guy :)