The more users' expectations prove right, the more they will feel in control of the system and the more they will like it.
Jakob NielsenAt most project meetings, everyone has a seat at the table except the poor victims who will have to operate the technology.
Jakob NielsenPopularity is the product of two factors: (a) how compelling material you offer, and (b) how easy it is to access it. Host free pirated movies and users will flock to the site, even if it's difficult to use.
Jakob Nielsen