How to remove your Baidu account
To remove the Baidu extension from your browser(s), use the following instructions.
Internet Explorer
Click “Start.” Select “Settings,” and then “Control Panel” and then “Add/Remove Programs.”
Scroll to Baidu on the list of programs.
Click “Change/Remove.”
Firefox
Select “Tools” and then “Add-Ons” in the browser menu.
Select the “Extensions” tab.
Select the Baidu toolbar.
Click “Uninstall.”
Safari
Click on “Applications” in the browser menu.
Scroll to “Toolbars” and click on Baidu.
Click twice on “Uninstall.”
Enter the “Username and Password.” Click “OK.”
Chrome
Right-click on the extensions bar.
Select “Uninstall.”
Choose “Uninstall” again.
Source: http://www.ehow.com/how_8360768_delete-baidu.html
Cannot delete the account, or worried the data lingers? See what to do when a site won’t let you delete.