You can use logic to customize questions per respondent in forms, allowing you to create a smart form that serves up questions based on the answer to the first question. This feature is available in many popular form software options, including Wufoo's Rules Builder, Formstack's Conditional Logic, and Typeform's Logic Jump. You can also use hidden fields to track referrals and record extra information about respondents, such as where they found your link or demographic data. Additionally, predefined choices for faster form set up allow you to add dropdown questions with 196 choices, while file uploads enable easy collection of files. Images, icons, and videos can be used to create a better experience in forms, and field validation ensures that answers are in the correct format. Payments can also be handled through form software, and integrations with other apps like CRM software or email marketing tools allow for automated data entry and analysis.