Patent ID: 8239921

Claim:
A method of authorizing use of a first service, as identified by a first service identifier, by a user in a server system comprising at least one server configured for connecting to a user device of the user, the first service being provided to the user in relation to a recipient, the server system having access to a database comprising at least a first service contact identifier of the recipient required for providing the first service and a second service contact identifier of the recipient required for providing a second service, wherein the first service contact identifier is different from the second service contact identifier, wherein said database comprises a third service contact identifier of the recipient required for providing a third service, the third service contact identifier being different from the first service contact identifier and the second service contact identifier, the method comprising retrieving the first service contact identifier based on the received first service identifier and the received service contact identifier, irrespective of whether the received service contact identifier is the first, second or third service contact identifier, wherein the server system has access to a recipient requirement list of the recipient and a user profile of the user, wherein the recipient requirement list comprises a first criterion regarding a spam-related item of the user profile, the method performed by the server system comprising: receiving the first service identifier from the user device of the user; receiving at least one of the service contact identifiers of the recipient from the user device of the user; if the received service contact identifier of the recipient is not the first service contact identifier, retrieving the first service contact identifier from the database based on the received first service identifier and the received service contact identifier; tracing the recipient requirement list on the basis of at least one service contact identifier that is not the first service contact identifier; checking by a computer processor whether the spam-related item of the user profile satisfies the first criterion of the recipient requirement list; permitting the first service to be provided to the user in relation to the recipient using the first service contact identifier of the recipient if the spam-related item of the user profile satisfies the first criterion regarding the spam-related item of the recipient requirement list; and denying provision of the first service to the user in relation to the recipient if the spam-related item of the user profile does not satisfy the first criterion regarding the spam-related item of the recipient requirement list.