A messaging system may enable a server to assign unique identifiers to a plurality of clients. These identifiers enable a client to determine whether a message is specifically targeted to that client or, as an alternative, whether the client is a member of a group of targeted clients. A server may send...http://www.google.de/patents/US7765316?utm_source=gb-gplus-sharePatent US7765316 - Scheduling the uploading of information from a client to a server
