Abstract: A user device displays portions of an electronic publication for a user to read. The user device tracks the user's reading behavior of the portions of the electronic publication. The user device then suggests additional reading material for the user based on the user's reading behavior.

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: Electronic content items such as electronic books are enhanced by identifying citations within the content items, identifying sources of the objects of the citations, and associating the citations with such sources so that readers of the content items can easily purchase or otherwise obtain the citation objects. The citations may be updated as new products become available or information related to the products changes over time.

Abstract: Methods and apparatus for supporting instance ordering selection policies (ISOPs) for network-accessible resources are disclosed. A system includes a plurality of resource instances of a provider network, and a resource manager. The resource manager assigns an ISOP to be used to respond to instance acquisition requests of a specified type from a particular client. In response to a request of the specified type from the client, the resource manager determines, based at least in part on the ISOP, an order in which a plurality of resource groups (such as a set of instances reservations of the client, or an instance marketplace accessible to multiple clients) is to be examined to obtain an instance for the client. Starting with a first resource group, the resource manager examines each resource group until an instance matching instance selection criteria specified in the request is found.

Abstract: A user device displays portions of an electronic publication for a user to read. The user device tracks the user's reading behavior of the portions of the electronic publication. The user device then suggests additional reading material for the user based on the user's reading behavior.

Abstract: A user device displays portions of an electronic publication for a user to read. The user device tracks the user's reading behavior of the portions of the electronic publication. The user device then selects a problem from a group of pre-generated problems for the user based on the user's reading behavior and provides the selected problem to the user.

Abstract: User content access events pertaining to a content item, such as an eBook, audio, video file, and so on, are collected and analyzed to determine progress data, including completion information about when the content item, or a portion thereof, has been completed. Once determined, further information or recommendations that have some relation to the completed content item may be presented to the user.

Abstract: Provided are, inter alia, systems, methods and techniques for controlling workflow by identifying an individual job that is part of an overall deliverables package that covers multiple jobs. An aggregate utility function is obtained, specifying utility based on an aggregate metric across the overall deliverables package, and a current operating point is determined on the aggregate utility function. An effective utility is calculated for the individual job based on the aggregate utility function and the current operating point, and the execution of work is controlled based on the effective utility for the individual job.

Abstract: Provided are, inter alia, systems, methods and techniques for controlling workflow by identifying an individual job that is part of an overall deliverables package that covers multiple jobs. An aggregate utility function is obtained, specifying utility based on an aggregate metric across the overall deliverables package, and a current operating point is determined on the aggregate utility function. An effective utility is calculated for the individual job based on the aggregate utility function and the current operating point, and the execution of work is controlled based on the effective utility for the individual job.