PLUT0  Maybe there are few virus threats to the Mac right now but the thing that the community needs to realize is that they will come. When that time arrives, we need to have developers who are responsive to the community and have grown along with OS 10. I probably will not use the current Virus Barrier that I have bought in the MacUpdate package, but I do believe that I should be helping to support efforts like this for the future. I think all of us really need to look at the applications that we use and give some longer-term direction to the developers as to what works and what doesn't.

Personally, for a virus detector, I would like to see a fast, small-footprint bloodhound that receives network updates whenever there is spare bandwidth and digs around in my files looking for decay and danger. Perhaps it could also be indexing stuff, to be handed off to the operating system.   
(Version 10.5.5)