Try the following to remove the program that is causing this:
1. From the Applications folder, open “Uninstall Genieo” and follow the instructions.
2. Close and re-open your browser. The search box should search the correct search engine now.
To change your homepage, go to Safari -> Preferences, General Tab, Homepage section and enter the URL of the homepage you would like to use.
If this doesn’t work, please contact us at support@blekko.com.