Protection that actually speeds up your PC
Some security products slow down your PC; AVG Internet Security 2012 speeds it up, by accelerating the download of content-rich files. 
Faster system start-up and support for Flash and HD video means you can enjoy online video like YouTube faster than ever before.
AVG Accelerator
AVG System Tools

Block hackers and stop identity thieves
More than just Antivirus, AVG Internet Security protects you when shopping and banking, 
keeping your identity safe. The AVG Firewall prevents inbound and outbound attacks, while Identity Protection secures personal content you enter online.
AVG Enhanced Firewall
AVG Identity Protection™

Award winning Anti-Virus that just works
Antivirus protection that automatically updates to protect you from continually evolving threats. 
As hackers develop new techniques, AVG’s research labs are constantly processing web data to provide new defenses to keep you automatically protected.
Anti-Virus, Anti-Malware, Anti-Spyware
AVG Protective Cloud Technology
AVG Community Protection Network

Be informed and in control
Get faster, safer Internet access when you need it most. With proactive advice from AVG, the power to boost performance and enhance protection is in your hands.
AVG Do Not Track
AVG Advisor
AVG WiFi Guard

Gaming and surfing without interruptions
Get on with your surfing and gaming without interference. Scans operate when you are away from your PC, and it also knows when you are gaming and ensures that the security operates in the background only, leaving you free to play.
AVG Smart Scanning
Game Mode
Auto-Fix

Keep messaging free of spam, worms and scams
Keep your inbox clear of spam and also protect it from phishing scams along with the hidden viruses that they contain. AVG will also protect you when exchanging files through popular instant messaging like MSN and Yahoo.
AVG Anti-Spam
AVG Online Shield™
AVG Email Scanner

Surf and search the web safely
You want to search and surf, but you don’t ever want to go to any infected websites. AVG helps you out by clearly alerting you to threats and keeping you clear of them.
LinkScanner® Surf-Shield

Share your life on Facebook, not viruses
With AVG protecting your system, you can chat and message your friends on Facebook and other social networks in the knowledge that each web page and link is checked for safety. You won’t pick up a malicious link from your friends – and you won’t send one either!
AVG Social Networking Protection

more info 
http://www.avg.com/ww-en/internet-security