Yahoo! Shopping is expected today to unveil a redesign that incorporates word-of-mouth concepts and lets marketers participate in the conversation.

The key new feature is called a Pick List, which lets users make lists of their favorite products. Yahoo! has put together a page it calls the Shoposphere, which aggregates Pick Lists and lets users access the lists of friends, acquaintances and strangers -- including online marketers.

The new community features are consistent with other initiatives that Yahoo! has undertaken recently, including allowing users to share travel advice in Yahoo! Travel and reviews of local merchants in Yahoo! Local.

Pick Lists are somewhat similar to Amazon.com's Listmania Lists. They let users compile groups of products available on the service that adhere to a certain theme -- books for new parents or Yankees memorabilia, for example. The shopper can then review those products or simply add thoughts or a description.

Yahoo! Shopping takes the list concept a step further than Amazon, however, allowing people to comment on each other's Pick Lists and subscribe to each other's lists via RSS. The RSS feature also allows users to easily syndicate their lists -- or others' lists -- to their blog or other Web site. The feature is integrated with Yahoo!'s 360 community service.

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