New features have been added to all versions od AdAware, including Ad-Aware Free

New! E-mail Scanner - Keeps you safe from malicious attachments and images in your e-mail.

New! Ad-Watch Live! Files – Blocks malicious files from entering your system, and alerts you to malicious files already on your PC.

New! Rootkit Removal System - Deep level rootkit technology that uncovers and destroys hidden threats, detecting both user-mode and kernel-mode attack techniques.

It also bundles a Chrome Browser installer. So if you dont want it, make sure the option is un-checked!

Ad-Aware Free - Download security software for spyware removal - Lavasoft