Al Bundy wrote:
maching search wrote in
oups.com:

Be alert your computer may have the virus infect. To protect your
computer and your documents, here is the urgent action for you to
click this link.

snip



AdAware Home is free, always has been. Extremely popular.

http://www.lavasoftusa.com/products/ad_aware_free.php

But surely you are confused...

The "adalert" pimped by the spammer gives him click revenue and may even
install extra valuable stuff for him on your computer such as a trojan.