This document discusses online surveys and their characteristics, types, advantages, and disadvantages. It defines an online survey as a structured questionnaire completed over the internet through a form. Some key advantages are lower costs than paper surveys, time savings through automated analysis, and easy accessibility. However, disadvantages include potential for fake or low-quality responses, limited sampling of populations without internet, and lack of interviewer clarification. In conclusion, while online surveys are becoming more common, their advantages and disadvantages mean they may not replace all other survey modes.