On timeliness hand, survey timeliness is increasingly stressed. The length of time it takes to field a survey is a function of the contact, response and follow up modes. the relevant measure is not average response time, but maximum response time ( or perhaps some large percentage of the response time distribution) since survey analysis generally does not begin until all of the responses are in. However, simply concluding that internet based surveys are faster than mail surveys ignores the reality that the total amount of time for survey fielding time is more than just the survey response time. A complete comparison must take into account the mode of contact and how long that process will take and the made of follow up allowing for multiple follow up contact periods. For example, if email address of respondents are unavailable and a probability sample is desired than respondents may have to be contacted by mail. In this case a web survey only saves time for the return delivery of the completed questionnaire and not for the contact and follow up, so that the resulting time savings may only be a fraction of the total survey fielding time. For example, a internet survey company, knowledge networks has indicated that to achieve 70 to 80 % response rates they must leave a survey in the field for about 10 days. This period comprises one workweek with two weekends because they find that most respondents complete their surveys on the weekend (Adrian, P. 2012). In conclusion, the delivery time of an internet based survey is faster than the delivery of a survey by mail, it does not necessarily follow that the increased delivery speed will translate into a significantly shorter survey fielding period. Two points are relevant: dramatic possible for specialized populations and even for populations in which all electronic surveys are possible.