Social Bookmarking in Libraries

Google and other aggregators haven't stolen any value from the creators of the content they are aggregating -- they have done what intermediaries have always done, which is create new value based on doing for customers what those customers cannot or do not want to do themselves -- the service of sorting through all that content to find the thing that solves their problem.

Rather the PSL are needed for the distribution of the users' attention back to the works. From an ocean of possibilities the PSL find, nurture and refine the work of creators that they believe fans will connect with.

This is not just about using free digital content to sell physical goods. It's an acknowledgment that what you're selling as an artist (or an author, or a publisher for that matter) is not content. What you sell is providing something that the customer/reader/fan wants.