There is a little confusion about who can join this platform. On its website, it has indicated that anyone from any country can join. However, to complete the registration process, you are required to have a US postcode. This means that only US citizens can access the Forthright platform. Nevertheless, the survey site is planning to expand globally soon. In terms of age, Forthright does not have any restriction so anyone can participate. Most sites do not allow people below 18 years to participate in surveys.