Abstract: A customized questionnaire is generated for a content item, such as an eBook, audio file, video file, and so on. Upon an occurrence of predetermined event, the user is presented with the customized questionnaire soliciting responses to questions and/or rating evaluations relating to the content item. The responses may include reviews, ratings, recommendations of similar items, discussion topics, and other things. Information from the responses may be collected and associated with the content item to build a user-driven index.

Abstract: Content is distributed electronically to a plurality of users. As the users consume the content, they may annotate the content to indicate corrections, comments, or other information. Annotations are collected at a server and reported back to content creators, such as authors, publishers, translators, editors, etc.

Abstract: In-line secondary transaction is described. In an embodiment, an on-line shopping interface is displayed via which an item can be selected for purchase. When a selection is received to initiate a purchase of the item, a determination is made that a secondary transaction is needed to complete the purchase of the item. An in-line secondary transaction user interface is displayed over a portion of the on-line shopping interface to facilitate the secondary transaction where the in-line secondary transaction user interface is displayed to maintain a context of the purchase on the on-line shopping interface. An input of transaction information is received via the in-line secondary transaction user interface to complete the secondary transaction such that the purchase of the item can be completed via the on-line shopping interface.

Abstract: A stackable and collapsible container (10) includes a wall assembly (12) which includes a plurality of opposing panels (20, 21), and hinge means connecting each panel (20, 21) to at least two adjacent panels (20, 21).