Abstract: The present invention provides systems, methods, computer program products, and combinations and subcombinations thereof for filtering received messages. The invention includes a client system having filtering logic, a statistical classifier module, and a classifier database. The classifier module is automatically trained, without manual intervention, when the score generated by the classifier for a received message is inconsistent with a user-defined authoritative status indication. In addition, the classifier module is initialized using user-identified messages in a ratio representative of the ratio of non-spam to spam messages received by the user.

Abstract: A system, method and computer program product provide a search module for searching digital data. The search module operates, according to an embodiment, by indexing stored data without interrupting use of the stored data, synchronizing the indexed data with data stored subsequent to the indexing step, searching at least one of the synchronized data and the indexed data, and outputting results of the searching step.

Abstract: A method, computer program product, and system are provided for bidding for position placement in a search result on time-limited resources. For example, an embodiment of the method includes receiving a bid for position placement of the time-limited resource in the search result, calculating the bid based on historical data of the time-limited resource, and ordering the search result based on the bid and relevance between a search term and attributes of the time-limited resource. In receiving the bid, the method can vary an amount of the bid for one or more time periods of interest, thus allowing flexibility for an owner/manager of the resource to offer bids for various time periods. The calculation of the bid is based on historical data of the resource, which can assess a likelihood that a consumer will click on a link associated with the resource, inquire further information on the resource, or book the resource.