Personally, I think this program does quite well in the malware department. I have used the free version for two/three years and it has found items that were subsequently deleted. I put this software on some computers that belong to friends of mine and they had more "hits" (because of surfing habits). The one thing that is important with this software is that you must take advantage of the fact that updates are daily for this program. If you don't take advantage of the daily updates, you are naturally going to be less enchanted with the software. Try it - you may like it.....I do.
This program has never detected anything on my machine, even when other anti spyware programs have. Not sure whether it works as it never gives any useful scan results. Files cannot be quarantined unless it detects malware. Not very good.
Great tool to be protected and it can work side-by-side by other anti virus or firewall programs. But its IP protection blocks some sites or funktions in sites.