Labels are defined by you and other users on the go. You can pleason to labels like ":brand", ":brand:product", ":place", :"thing" , ":organisation"..., twitter hashtags "#somehting" and mentions "@someone"
A pleasOn (a click in one of the faces at the home screen) represents your satisfaction about something , a brand, a product, a place, a celebrity, an idea ... anything identified by a label (i.e. :levis, :obama, :life ) . Your satisfaction is measured by an Energy that decreases over time. Every time you pleason (click) a label you generate energy . If you want to keep your satisfaction with a Label you have to keep pleasoning it!
You can share your pleasOns in Twitter, Facebook, WhatsApp...
Use your Facebook account to link your devices and see what is popular among your friends. You can compete with your friends: the more pleasOns you make the more energy you get !