This is for all of those people that go to work and try to hide the fact that they are browsing the Web. Whether it be hiding from your boss, co-worker, or anyone this is perfect.
Ghostzilla is designed to display itself in any application to make everything as discreet as possible (screenshot above of Ghostzilla in Outlook Express). All images will display in grayscale, but if you want to see a color image then simply hold your mouse over the image.
While it may not be the easiest Web Browser it is sure the sneakiest one that I have seen. While the screenshot does not show an address bar there is one available in the application.