Currently, the Internet has consolidated itself as an important means of communication, present in many homes and especially present among the institutions.
The software produced via internet provide greater mobility of data, both in his collection, as well as in its disclosure.
These surveys are less costly and have greater assurance of anonymity of the participants, because there is no interviewer and even the system administrator can identify the participants' responses.
Because it is less costly, research via the Internet can be applied several times, making more accurate assessment in this scope.