Abstract: A pre-defined set of similarity parameters associated with a plurality of clients in a virtual environment, including at least one non-spatial dynamic parameter, is identified. The identified pre-defined set of similarity parameters is processed using at least one tool from a pre-defined set of analysis tools. A group is created within the plurality of clients using the identified at least one non-spatial dynamic parameter. A plurality of group characteristics associated with the group is generated using the processing of the identified pre-defined set of similarity parameters. A user interface is provided to at least one client from the group for communication in response to the generated plurality of group characteristics, wherein the user interface is used for at least one of intra-group communication and communication external to the group.

Abstract: A Web document including Web content can be presented within a user interface. At least one content segment of the Web document can be associated with a visual identifier. At least one annotation can be associated with said content segment of the Web document. The annotation can be presented within an annotation view of the user interface. The annotation can include content provided by another in commentary to the Web document and in particular in commentary to the content segment of the Web document.