AVG Premium Security 2013 is an extended version of AVG's Internet Security 2013 which includes some very useful extras.
Identity Alert, for instance, is a web service which can scour the web looking for personal details like your credit card number, email address or telephone number. If it finds anything suspicious - a hacker has dumped your details online somewhere, perhaps - you'll be sent an email alert, giving you valuable time to inform your bank, change passwords and so on.
And Quick Tune is a simple but straightforward PC cleanup tool aims to enhance your system's performance by fixing Registry errors, removing junk files, defragmenting your hard drive and detecting and deleting broken shortcuts.