Sleuth is a website that collects and shares the experiences of parents with their children’s health and development. This information is used to help parents of similar children find critical information, such as diagnostic pathways, daily tips and tricks, invaluable specialists, and resources. They use user information (i.e. data) to create a profile for a child. This information - if the user chooses to share it - is available for other website visitors to read. A user’s information may also be used to provide them with summaries of other parents’ answers (as well as summarise their advice to others), and be used to match the user’s child with similar profiles. They maintain a map of the symptoms, diagnoses, and treatments that parents share with Sleuth. This helps with word representation and text classification, so that they can give users better results by analysing how one child’s experience might be related to many others’ and how a child’s experience might be likely to evolve over time. They use statistics and artificial intelligence to provide parents with the best summaries of the data. They also use standard open source software, like Elasticsearch, which is the same technology that enables search on platforms like Wikipedia.