Seems to be the only Free Mac antivirus software that does full real time monitoring. Clam's sentry doesn't really compare. Also unlike Clamxav it has heuristics which in theory allow it to detect unknown viruses and variants of known viruses. I don't think it detects Window viruses but It did stop me from even downloading the Eicar.com test virus in Firefox which while expected at least shows it's paying attention.

It is also very light on system resources. So it really can't hurt to run it. For most average users it may end up being a solution in search of a problem but another layer of security is never a bad thing if it stays out of your way.

Finally enough with the slamming users who use Antivirus software on the Mac. It's a choice, and it's not hurting you. Quit whining already.