1. A system for updating multiple presence publications in a single request, comprising: a compose presence publish-related request component that creates requests containing a list of publication modifications to be published, wherein each modification comprises: a user identifier that identifies a user whose presence information is being updated; a collection identifier that identifies a collection that the publication belongs to; a type identifier that identifies the category of presence information being updated; and a send component that sends the presence publish-related request to a presence server.