While certain information, such as personal medical data, is subject to legal protections in many countries, most data can be used in whatever way a website wishes to use it as long as users are adequately notified. What this means is that the burden of ensuring that data is being used properly rests with each individual website user. If you are thinking of using a particular website or application that will require that you upload information and data in order to use the service, be careful to research the policies the company has in place to define how your information will be used before uploading any information to the website.