It is easy to like something. It is often a gut-wrenching and painful thing to dislike something. The 'Dislike' stamp takes the pain out of disapproving, allowing you to simply stamp it instead of say it. Words can and will hurt you. A stamp, not so much.
Implications - Social media is becoming more than just a way to pass the time. Consumers are beginning to shape their identities through these sites. Products that are integrated with an aspect of the Internet are appealing to shoppers who want to solidify who they are. Companies trying to increase their appeal on the market could come out with more of their items with this element.