I favor your statement as I know that how much is that advertisement effective. I know that how much will your friends and family affected with any of your review for any product on your social media profile. If they will see you are giving review for any product then they will try it.
That is true. I am also often convinced to give a try to a product about which my friends and my relatives share on their facebook and on their other social media network. So this is a brilliant thinking to have a system for the word of mouth advertising. It will really boost the marketing of any company.