Abstract: Social media networking applications, web sites, and services creates implicit relationships between users based on their interest or participation in real-world and optionally virtual or online activities in addition to explicitly defined peer relationships. User profiles, activity entities, and expressions may be associated with metadata to assist in searching and navigation. Metadata is implicitly associated with user profiles, activity entities, expressions, or other data entities based on user behavior using metadata collector. A metadata collector is a poll, survey, list, questionnaire, census, test, game, or other type of presentation adapted to solicit user interaction. A metadata collector is associated with metadata elements. When users interact with a metadata collector, their user profiles and the data entities included in their interactions become associated with the metadata elements of the metadata collector. These metadata element associations may then be used for any purpose.

Abstract: A method for sending secure content to a content recipient via a mobile device comprises receiving, by a third-party proxy service, a content delivery message containing a URL to a web resource containing the secure content. Responsive to receiving the message, the third-party proxy service: sends a message to the mobile device containing a proxied URL selectable for routing the mobile device to the secure content page, via the third-party proxy service; receives a content request from the mobile device for accessing the proxied URL; communicates with the mobile device to authenticate the user, based on biometric data provided by the user; and responsive to determining that the user is the content recipient based on a positive authentication, proxying the content request to the web resource containing the secure content.

Abstract: A method for sending content to a mobile device comprises receiving, by a proxy service, a request containing a first URL to a web resource containing the content. In response, the proxy service: sends a first message to the mobile device containing a second URL to a web resource operated by the proxy service; communicates a unique access token to the mobile device responsive to the mobile device accessing the second URL; sends a second message to the mobile device containing a proxied URL selectable for routing the mobile device to the web resource containing the secure content, via the proxy service; receiving a request containing the unique access token from the mobile device for accessing the proxied URL; evaluating the access token in the request to determine if it corresponds to the unique access token; and, if so, proxying the content request to the web resource containing the content.

Abstract: A system and process is provided for cladding of cylindrical surfaces. The cladding operation uses a laser head to carry out a welding operation in a tube spinning at high speeds to create smoother interior and exterior linings than can be obtained with conventional welding techniques. As a result, substantial post-weld machining and finishing are eliminated.