The Gnome developers decided to set to set DuckDuckGo as the default search engine on the latest version of Epiphany, that comes with GNOME 3.10.
They have made this decision because the DuckDuckGo search engine does not collect or share any personal information, and so, the users’ searches will be remain annonymous. And the search engine is not that bad afterall. It returns good results, has some handy keywords for directly search in Wikipedia (!w), Amazon (!a), or even Google if you still need it (!g).
This may be only a temporary change, since the GNOME team takes into account the users’ feedback. The users will be able to easily switch back to the Google search, if they are not satisfied by DuckDuckGo.