Yahoo patent applications published on 09 August 2012

3 US patent applications published on 09 August 2012 and assigned to Yahoo

1 20120203852 SYSTEMS AND METHODS FOR ESTABLISHING OR MAINTAINING A PERSONALIZED TRUSTED SOCIAL NETWORK
2 20120203839 APPARATUS AND METHODS FOR MANAGING A SOCIAL MEDIA UNIVERSE
3 20120203782 METHOD AND SYSTEM FOR DATA PROVENANCE MANAGEMENT IN MULTI-LAYER SYSTEMS