They can be used as indicators of various aspects, such as a person's preferences regarding activities, purchases, destinations, as well as who they may choose to meet, follow, or support politically.
They can be applied in conjunction with social graphs as a way to meet or connect with people in a social network or community with shared or common interests, and who may not otherwise know each other.
[7][13] Interest graphs can also be applied to marketing for purposes such as audience analytics and audience-based buying,[14] for sentiment analysis,[15] and for advertising as another form of behavioral profiling and targeting based on interests.
[16] Interest graphs may be applied to product development by using customer interests to help determine which new features or capabilities to provide in future versions of a product.
[5] Interest graphs have many other uses as well,[12] including simulation,[17] research and other content discovery and filtering tasks,[18] as input to recommendation engines for films, books, music, etc.,[19] and for learning and education.