Well your knowledge will be the AV cause you can easily identified which are malicious and not.
Unlike AV its needs to be update for the new definitions
bogdan said:The fact that MrXidus manages to stay safe while not using an av proves that it is possible, but I don't want the average user to read this thread and somehow get the idea that an av is useless, or even worst, if you are using an av you're probably not as smart as someone who doesn't use one. This would be bad advice.