BookLens is a web service that allows the library to take advantage of rating, review, and recommender features. The library automatically creates a BookLens account corresponding to your patron account. The mapping from your patron account to BookLens is maintained and stored by the library; the BookLens service has no reference back to your patron data.
The library that creates your BookLens account is authorized to transfer ratings and reviews from the catalog to the BookLens server for storage, and to request predictions and recommendations. Your ratings may be used to compute new predictions for other users, and your reviews are visible to any participating library.