Vlad It may act more like an interface to a database where users can either query it to see if their website or whatnot is part of the training data, or download it in its entirety to study it. As it is a theme with Kagi to empower its users, I would hope that these systems that take advantage of other users' material can then be interacted with by said users. So it isn't necessarily a "report" per se, just way to interface with the training data.
