There's no chance that you--or Google--will stumble across that site by accident, or any of the secretive Darknets that have sprung up around technologies such as I2P or Freenet (which Alex Wawro touched upon in the August issue of PCWorld magazine).
A word about safety
The Tor browser's Vidalia control panel.
And although this probably doesn't need to be said, don't share any personal information with anyone or any site on the Darknet. That includes reusing passwords you use on Surface Web sites, or divulging credit card information. Bitcoins are the preferred currency of this computerized Wild West for a reason.
Speaking of which, be very, very careful when slinging your digital dollars around. The anonymity of Bitcoins and the Darknet makes Onionland a haven for scammers.
Finally, consider visiting Onionland from a virtual machine to protect your actual PC from harm if you do manage to catch something nasty while trawling the depths. You could run a preview copy of Windows 8.1 or the Linux distribution of your choice in Virtualbox if you'd like, or you could (preferably) create a live disc of Tails, a Linux distro built around anonymity and the Tor browser.
Seriously: Don't muck around in the Dark without taking the proper security precautions. Got it? Good. Now go do it--or better yet, don't.
This is not for you
In all likelihood, you'll never need to venture into the Deep Web. The Surface Web contains all the services and tools the average person could ever want. You won't find any streaming video services or social networks or corporate websites or any other mainstream elements buried in the depths of the Deep Web, and the Darknet is fraught with bogeymen just waiting for you to let down your guard. Enjoy the novelty of an article like this, maybe scope out a directory or two, and then stay well away.
But if you ever do need the sanctity of secure communications and true anonymity--a level of protection that the Surface Web simply can't provide--then rest easy. Everyone has a voice in the Darknet, down in the depths where even Google's spiders fear to crawl.
Sign up for CIO Asia eNewsletters.