Abstract: A communications system may include a content provider device having an instant message (IM) content provider contact associated therewith and may be configured to store content. The communications system may include an IM contact server configured to register the content provider device and thereafter allow subscriber access to the IM content provider contact. The communications system may further include a communications server configured to communicate with the content provider device, and a subscriber device configured to access the IM content provider contact from the IM contact server, and download content from the content provider device via the communications server and based upon the IM content provider contact.

Abstract: Provided are a system and method of searching information. The system comprises: a database comprising a data storage area in which data is divided into a plurality of data blocks and stored, and metadata storage areas; a searcher configured to receive, from a user, a keyword search request comprising a targeted keyword and a targeted search range, and to search the data stored in the database using the targeted keyword in a keyword search; and a keyword manager configured to receive, from the searcher, keyword absence information generated from a result of the keyword search, and to store the keyword absence information in the database.

Abstract: A communications system may include a control device having an instant message (IM) device contact associated therewith. The communications system may also include a control gateway having an IM gateway contact associated therewith and may be configured to communicate with a controllable device over a network. The control gateway may be configured to validate the IM device contact. The control device may be configured to communicate with the controllable device through the control gateway after validation and based upon the IM device contact and the IM gateway contact.

Abstract: A communications system may include a content provider device having an instant message (IM) content provider contact associated therewith and may be configured to store content. The communications system may include an IM contact server configured to register the content provider device and thereafter allow subscriber access to the IM content provider contact. The communications system may further include a communications server configured to communicate with the content provider device, and a subscriber device configured to access the IM content provider contact from the IM contact server, and download content from the content provider device via the communications server and based upon the IM content provider contact.