Sibling Rivalry (SR) is a brother and sister duo that work in social marketing. With a specialization in viral advertising SR have over 5 years of experience in the viral marketing realm.

Sometimes they feel like writing in third person. Other times we prefer first. Both Amy and Joe have three letter names. They also share a last name. One likes Pepsi, while the other enjoys Coke. Joe likes short sentences, hates the color maroon, and spends his free time playing DOS computer games like Number Munchers and Maniac Mansion. Amy enjoys reading coupon books, loathes people who chew loudly, and spends her time drinking while watching episodes of My So Called Life.