Abstract: Systems and methods are provided to evaluate a search engine using search results retrieved from a plurality of different search engines. For example, a controller can randomly distribute a set of pre-formulated queries to a plurality of computers to query the search engines at random times to obtain search results and combine the search results to evaluate the completeness of a query result provided by a particular search engine. The controller may simulate the random queries from users using a set of computers and may reduce the burden on the search engines by spreading out the query activities over a period of time, such as a month.

Abstract: A system and method for offering a service upgrade to a service user. The system includes a server that monitors utilization by the user and evaluates the user's utilization pattern to determine which, if any, service upgrades may be appropriate for the user. Once a set of candidate service upgrades has been identified, the server then determines whether there is sufficient available capacity to accommodate the provision of such additional services. If such capacity exists, the user is offered the service upgrade. Since the offer is not made unless there is shown to be sufficient available capacity, once the offer is made, the system is able to implement the upgrade in real time with the user's approval.