Google the search engine. There are no banners on it. well, maybe some links to products but how do they pay their bills? Their stocks are worth so much ever since they went public on the market. Sure they sell Google Earth pro and maybe this and that but what makes it worth so much? Do companies pay google to put their names first on search lists? Is it based on hit counts or on who donates the most to the company? AOL is another company that seems to have a huge overhead with dialup nodes and rude customer service reps. They say they have Millions of users but I always saw the same people on there when I would chat in their rooms some years back. Did they give out so many accounts then brag about how many people they had so the stock values would go up? I think they call that "Padding the market". But I guess that's what makes this country so strong. there stock values bring in revenue

And I never understood this thing <----

The Search engine is non profit does'nt makes money it just there no one pays for it.. you get the idea

Google Inc. is an American public corporation, earning revenue from advertising related to its Internet search, e-mail, online mapping, office productivity, social networking, and video sharing services as well as selling advertising-free versions of the same technologies.
The Google headquarters, the Googleplex, is located in Mountain View, California. As of 30 June 2008 the company has 19,604 full-time employees… More @ ~rore
http://en.wikipedia.org/wiki/Google

Where do they sell advertisment? Thats the part I don't get

http://www.youtube.com/watch?v=s8MDNFaGfT4

Your answer lies in the link.