"BT Yahoo! Anti-Spy is a free BT Yahoo! feature that helps you decide whether to remove software like adware, spyware, hijackers, and keyloggers from your computer. BT Yahoo! Anti-Spy scans your computer for such possibly unwanted software, and allows you to review, remove, or add to the whitelist any applications that are found. If you accidentally delete something important, in many cases, BT Yahoo! Anti-Spy can restore it".