i believe it does, as with most other shareware/freeware programs. you can download ad-aware, a great small program that scans your registry and cookies to remove spyware from your system. http://download.cnet.com/downloads/0-10106-100-7302674.html?tag=st.dl.10001-103-1.lst-7-1.7302674 however there are some programs that if you remove the spyware from your computer, the program will not run. i do not know wheter AG falls under this category.