Abstract: The invention concerns a method for determining a user guide in a computer network, wherein a message (202) comprising information about at least two devices (111, 112, 131, 141) selected (200) by a user is received by a server (102), said user guide is determined (203) by said server (102) depending on information about devices (111, 112, 131, 141) retrieved from storage and said message (202), and a further message (204) comprising at least a part of said user guide is sent by said server (102).

Abstract: When aggregating syndicated Web content, updated content is retrieved from predetermined Web feeds. The updated content is compared with stored content previously retrieved. If the updated content is determined to be different from the stored content, the updated content is stored. If the updated content is determined to be identical to the stored content, the updated content is delete.

Abstract: A method for dynamically monitoring a group of wirelessly communicating mobile entities, characterized in that it comprises: assigning each entity a unique identifier; saving within a referring entity the list of the identifiers of all of the entities in the group; determining, for each entity, a vicinity with a predetermined radius; repeatedly, for each entity in the group: detecting the other entities located in its vicinity; transmitting a message to the detecting entities, said message containing at least the identifier of the entity, to be relayed to the referring entity; collecting, within the referring entity, the messages relayed to it; creating a list of identifiers contained within the messages; comparing this list to the saved list; if the lists are identical, determining the cohesive group; otherwise, determining the non-cohesive group.

Abstract: Method for aggregating syndicated Web content, comprising the steps of: Retrieving (100) updated content from predetermined Web feeds; Comparing (120) said updated content with stored content previously retrieved; Storing (160) the updated content if it is considered different from the stored content; Deleting (170) the updated content if it is considered identical to the stored content.

Abstract: A method for dynamically monitoring a group of wirelessly communicating mobile entities, characterized in that it comprises: assigning each entity a unique identifier; saving within a referring entity the list of the identifiers of all of the entities in the group; determining, for each entity, a vicinity with a predetermined radius; repeatedly, for each entity in the group: detecting the other entities located in its vicinity; transmitting a message to the detecting entities, said message containing at least the identifier of the entity, to be relayed to the referring entity; collecting, within the referring entity, the messages relayed to it; creating a list of identifiers contained within the messages; comparing this list to the saved list; if the lists are identical, determining the cohesive group; otherwise, determining the non-cohesive group.