Spanish-language media giant Univision is launching an ad network aggregating web sites that reach a significant portion of the U.S. Hispanic audience, reports Adweek.  The company has approached niche web sites and blogs that have a significant audience but lack ad sales operations.  The strategy is similar to moves by MTV Networks and Martha Stewart’s media company to create vertical ad networks for their target audiences.  Univision’s group includes Spanish-language online destinations for news, entertainment, business and sports content.

Read more at Adweek {link no longer active}.