If there’s an old book in your house and you don’t know what to do with it, here’s a tip: try using BookMooch. BookMooch is a non-profit site for book lovers who enjoy exchanging books. The site was built with a very simple idea. Users have profile pages where they can list the books that they are willing to give away. Anyone can sign up for an account and registration is free. Once you have an account, you are able to see the inventory of other members and mooch their books. Every time you mooch a book from somebody else, you “pay” with one point. And every time someone mooches a book from you, you get one point. Books travel from sender to moocher via regular mail.
Unlike the e-commerce sites mentioned in my previous post, BookMooch doesn’t have a central authority to control the transactions. The site is based exclusively on mutual trust. Therefore, it’s important to display clues about past mooches, so everyone can see who is playing fair and who is not. Nobody wants to use a point and mooch a book that will never arrive. Each user has a profile page that lists basic information on past activities, such as overall feedback score, books mooched and books given. Members can use that information to decide which members they should mooch from.

Reputation is a fundamental part of the experience on the site. Needless to say, BookMoochers with low feedback score are less likely to exchange books than those with higher scores. Other than score, the profile pages display additional clues about the community members. Their list of books given and mooched as well as their inventory and wishlist can indicate reading habits and preferences. Those records are open to any other user on the site, and they offer more information to assist BookMoochers during the transactions.

When a member puts Huckleberry Finn on her wishlist, she is not only increasing her chances of getting books. She is also letting everyone else know a little bit more about herself, as a Mark Twain reader. In the long run, the list of books given and mooched could serve as a way to cluster users with similar preferences. As noted by Bryce Glass on his post Reputation is Identity, on the Web “visible histories reveal shared affinities and allow users with common interests to find each other”. BookMooch doesn’t rely exclusively on user feedback to build reputation. The site also tracks its members’ regular activities and makes them visible to those who are interested.
This is an interesting approach for two reasons: (a) it takes advantage of the natural actions taken by users, instead of requiring extra efforts (e.g. filling out forms to describe preferences) and (b) it offers a granular perspective of each member, which is something particularly important for new users with no transaction history yet. Transparency is an important tool used on BookMooch and it helps BookMoochers make better decisions.
On my next post, I’ll go further and talk about reputation as an incentive for participation within online communities.
(This post is part of my research for the Information Architecture and Knowledge Management academic program at Kent State University).



