No computer geek here.
Are you guys saying that it's good for HD Porn?
From what I've read it works inside what's called a "sandbox". Supposedly any outside code that is sent to the sandbox (a virus, etc) is trapped inside the sandbox and can't be written to any applications or root functions in your computer. When you close the browser the code in the sandbox simply goes bye-bye.
Currently I have not been able to effectively install it in XP, probably requires some geekie knowledge I don't yet possess. I was able to install it, kinda of, but it would not install in an executable path that is recognized by the computer. There's probably a how-to somewhere in Wiki-links.
There is another one based on the Chromium kernel called Comodo Dragon that seem to be a very popular alternative to Google Chrome.