Abstract: Provided are a system and method to determine similarities. The method includes gathering metadata from at least one posting by a First User on a first Social Network to define at least one First Field associated with at least one First Entity, each associated First Field having a value. The method evaluates responses to the posting by at least one Third Party, and in response to the Third Party using one or more of the First Fields, increments the value of each used First Field. An indication of the values of each First Field associated with each First Entity is provided, the indicated values permitting a determination of similarity to at least one Second Entity querying for at least two Fields. An associated system for determining similarity is also disclosed.

Abstract: Provided are a system and method to authenticate user identities. The method includes gathering metadata from at least one discussion involving at least one pre-defined user identity on a first social network. The method evaluates the metadata of at least one third party response related to a posting by the at least one pre-defined user identity. The at least one pre-defined user identity is authenticated based on the evaluated third party response. And an indication of authentication for the at least one pre-defined user identity is provided. The system and method may also permit bridging of the established authentication between different social networks.