1. Social currency. Consumers are more likely to adopt a product if it makes them feel special or ahead of the curve. For example, Gilt’s exclusive sales helped it become one of the hottest online shopping sites.
2. Triggers. Products that catch on become part of our everyday lives, so successful products create reasons and reminders to return on a regular basis. For example, Facebook and Twitter drive you back to their sites every time they email you to say you have a new message or mention.
3. Emotional impact. People tend to evangelize a product if it affected them emotionally, whether it solved a stressful problem or brightened a bad day. For example, if a Buzzfeed article makes you laugh, you’ll likely share it with friends who need a lift.
4. Visibility. Giving a product a distinctive feature, such as a standout logo or color, helps consumers notice when others are using it. For example, you immediately recognize iPods because Apple made the headphones white when other companies all used black.
5. Practical value. A truly useful product that helps the user become more effective is more likely to be recommended often. For example, Evernote is very good at helping users remember and organize information, so it’s often recommended for research.
6. Stories. If people are going to share your product, they need to be able to tell its story. That can be as simple as a clear statement about what the product does, or as complicated as a really interesting origin story. For example, people who buy TOMS shoes love telling others how one pair is donated for every pair you buy.