Abstract: A determination is made regarding whether a user is allowed to access a content item. The content item is associated with a website. An offer associated with the website is identified. The offer includes a set of use-time rules specifying time periods during which the offer can be used to access content. A use-time rule is associated with a user class. A class of the user with respect to the offer is determined. The user's class indicates whether the user has accepted the offer or whether the user has registered with the website. A determination is made regarding whether the user is allowed to access the content item based on the offer, the user's class, and a current timestamp.

Abstract: A determination is made regarding whether a user is allowed to access a content item. The content item is associated with a website. An offer associated with the website is identified. The offer includes a set of use-time rules specifying time periods during which the offer can be used to access content. A use-time rule is associated with a user class. A class of the user with respect to the offer is determined. The user's class indicates whether the user has accepted the offer or whether the user has registered with the website. A determination is made regarding whether the user is allowed to access the content item based on the offer, the user's class, and a current timestamp.

Abstract: A system is provided for the high-speed and high-fidelity collection of network traffic. The system can collect traffic at gigabit-per-second (Gbps) speeds, scale to terabit-per-second (Tbps) speeds, and support additional functions such as real-time network intrusion detection. The present system uses a dedicated operating system for traffic collection to maximize efficiency, scalability, and performance. A scalable infrastructure and apparatus for the present system is provided by splitting the work performed on one host onto multiple hosts. The present system simultaneously addresses the issues of scalability, performance, cost, and adaptability with respect to network monitoring, collection, and other network tasks. In addition to high-speed and high-fidelity network collection, the present system provides a flexible infrastructure to perform virtually any function at high speeds such as real-time network intrusion detection and wide-area network emulation for research purposes.