Actually, neither Avira nor McAfee are very good antiviruses, because they are made by antivirus companies.
The problem with antivirus companies is, frankly, that they are in the business of fear mongering. Antivirus companies make money by telling people that their computers are unsafe. If they don't tell a user "This might be a virus!" the user won't have any reason to install their software, and then they wouldn't earn money.
So while antivirus software tend to be fairly good about not having false negatives (not detecting viruses), they don't have very much incentive to deal with false positives (calling something that isn't a virus a virus).
communities have problems with antivirus software being overzealous.
Chrome, Firefox, and even IE have built-in lists of what sites are dangerous. Microsoft themselves have an antivirus named Microsoft Security Essentials. It's much better to trust companies that don't earn money from exaggerating how dangerous various software and websites are.
Originally Posted by Fat Alade
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Can you tell me where these links lead?