This is all in my humble opinion:
I use it and I put it on all the computers I work on. It is easy to update and it works. You can sign up to have them send you an email when there is an update available or you can set the program to look as often as you like for updates.
I put it on a computer today that had 14 files infected with W32/magistr.b and 2 files with badtrans, which it caught immediately. The only thing I don't like is there are no special instructions of how to get rid of the manual parts of the virus, like the Win.ini file and the registry. Luckily, I know where to look.
Remember, NO anti virus program will work unless you update the virus definitions.
Why it's free, I don't know. However, innoculate was free for quite a long time, then they started charging for it, so I guess it could happen we would have to pay for it later
Good Luck in your decision!
Lori ggebhart@clover.net
I hope I never get too old or arrogant to learn something new!