It isn't malicious software and what's Whirlpool?
Found it.
QUOTE
In late February, AVG paired its updated anti-virus engine with a real-time malware scanner that vets search engine results before you click on them. If you search Google, for instance, this LinkScanner automatically visits each address that turns up on Google's results page.
According to the company, more than 20 million people have downloaded the new AVG 8, and this has caused a huge up-tick in traffic on sites across the web, including The Register. Because the scanner attempts to disguise itself as a real live human click, webmasters who rely on log files for their traffic numbers may be unaware their stats are skewed. And others complain that LinkScanner has added extra dollars to their bandwidth bill.
You're not going to have any problems if you disable LinkScanner. It sounds like a pretty stupid feature though.
Edit: "To sum it up, it wastes your banwidth because it scans it without your knowledge". It won't do it if you disable the feature, so it's not really doing anything without your knowledge.