Anyone who likes to save money would love this site. It may not "earn" you money in the traditional sense (however it does have an affiliate program that starts out a $5 a referral) but anyone who loves shopping can use it to save money AND get cash back so I am sure you could possibly get people to sign up (only a sign up is required, not orders).
http://www.befrugal.com/cashback/?ref=TABTNSA