Abstract: Advertisements are refreshed in an interface based on one or more parameters provided over a network. The parameters can be retrieved from a web service and implemented at a client device. Advertisement refreshing is performed independently of web page content loading. The parameters may include a time period and user action count and be configured differently for different markets, geographical areas, other customer groups, sections of an application or different advertisement types. One or more of the parameters may be adjusted at a back-end server and distributed to machines in the different customer groups, allowing an efficient and centralized mechanism for managing and updating advertisement refreshing.

Abstract: A multiple tier system is provided for classifying the safety level of an electronic message. The multiple tier system can include safety classification levels of safe, medium safe, and unsafe. Display settings associated with each safety level govern how messages are initially displayed to a user. A user interface distinguishes messages using a safety information interface. The safety information interface provides information about the message and allows a user to provide input regarding the desirability of the message. Upon receiving user input, the safety level of the message may be changed and other processing related to the message can be performed. The system also provides a mechanism for detecting and unsubscribing from a mailing list.