Adware:Adware (or spyware) is a small program that is designed to show advertisements (in various form and degrees of intrusiveness) on your computer. It often reports personal information back to its owners. As a result your sense of privacy can be violated.
This trojan masks itself as an America Online application, but instead of performing useful actions it simply tries to erase the hard disks of the infected machines. Any computer can get infected with AOLamer 3 through several internet resources or e-mail massages from unknown senders.
Technical details (How to remove AOLamer 3(pop up))