Allocating subscription revenue may involve receiving usage information relating to usage of digital content (e.g., music, movies, text, images, games) in a digital content aggregation, identifying a coefficient relating to a subset of digital works in the digital content aggregation (e.g., author-specific...http://www.google.de/patents/US7505936?utm_source=gb-gplus-sharePatent US7505936 - Digital content subscription conditioning system
