In Argentina, Yahoo (and to a lesser extent Google) have removed certain search results for many public figures, like Diego Maradona:

http://opennet.net/blog/2008/11/adi%C3%B3s-diego-argentine-judges-cleanse-internet

This has been going on since 2006, OpenNet.net says. While Yahoo removed all of the results of a search for Diego Maradona, he article says, Google only removed more specific results – see the footer links to ChillingEffects in this Google search, for instance:
http://www.google.com.ar/search?site=searchhl%3Des%26q%3Dsusana%2Bgimenez%2Bsexshop%26btnG%3DBuscar%26meta%3D&hl=es&q=susana+gimenez+sexshop&btnG=Buscar

[Via http://searchengineland.com/argentina-forcing-google-yahoo-to-censor-search-results-15427.php]