A system which regulates communication with a server is described. During operation, the system determines a retransmission rate of data packets during a first set of conversations between a group of users and the server via a peering link. Next, the system compares the retransmission rate and an historical retransmission rate of data packets during a second set of conversations between a second group of users and the server via the peering link. The system then adjusts a target acceptance rate of the server to requests to initiate conversations with additional users via the peering link based on the comparison of the retransmission rate and the historical retransmission rate. Additionally, the system accepts or rejects a request to initiate a conversation between another user and the server via the peering link based on an actual acceptance rate of the server to requests to initiate the conversations and the target acceptance rate.

A software module is presented that enables a person to determine the relevance of a document while preventing the person from making a copy of the entire document. In one embodiment, this is accomplished by programmatically controlling which portions of a document will be presented to a user and which portions will not be presented to the user. In one embodiment, the software module is used in conjunction with a search engine to present a document search result.

A system ranks results. The system may receive a list of links. The system may identify a source with which each of the links is associated and rank the list of links based at least in part on a quality of the identified sources.

Systems and method for generating a user interface described. In one described system, an aspect associated with an article is identified. Next, an insert comprising a search result is generated based, at least in part, on the aspect. The insert is then caused to be output in association with the aspect.

A method, apparatus, and queuing engine implement congestion management. The method may include receiving, via a first interface of the apparatus, data traffic for forwarding to a node of a network. The method may also include receiving, at a second interface of the apparatus, a notification that indicates that congestion is affecting communication with the node, and responsive to the notification, accumulating the data traffic into the queue for a given time period. The method may further include dequeuing the data traffic from the queue after the given time period; and sending the portion of the data traffic to the node via the second interface.