1. A load distribution system, comprising: a plurality of processing servers for notifying a result of processing of an event to a plurality of applications; context-dependent distributing section for distributing events occurring in terminals to the plural processing servers, wherein the context-dependent distributing section distributes an event based on content of the event as a context of the event; and event processing distribution control section for individually setting processing rules to the plural processing servers and setting a distribution rule to the context-dependent distributing section, the distributing section thereby appropriately distributing events required to execute the processing rules, the event processing distribution control section setting the processing rule of the event processing required by an application to the associated processing server, the processing rule including an event condition specifying content of an event associated with an operation for the event, each of the processing rules set in the associated processing servers being different respectively, the event processing distribution control section setting a distribution rule to the context-dependent distributing section, the distribution rule including content of an event associated with information showing the processing server which has the processing rule including an event condition specifying the content of the event, the event including the content being distributed to the associated processing server according to the distribution rule, wherein the plurality of processing servers, context-dependent distributing section, and event processing distribution control section are implemented by a processor.