Although mastercomputers is relatively correct the most important thing for google ranking is the number of backlinks that your website has, and how relevent the backlinks are. So for example if you have gotton listed in yahoo web directory then the popularity of your website will go right up. If on the other hand you get a link from an unknown blog then it will add little to nothing to your ranking.
You need to cut down on the number of images that your displaying, it takes a quite while for them to load on my browser. Also you need to decrease the contrast for the background image your using behind your stats to make the text more visible.
Under the google terms your not actually allowed to say how much your earning, but I can say that its far from a scam. The two largest online advertising companies are google and overture (owned by yahoo), and they both pay out millions to publishers. Just check their annual financial statements.
What software do you use for creating your webpages? Whenever I make webpages I use dreamweaver because it is built to be w3c compliant. For example it tells you what CSS features are available for any particular browser. Very useful
Shareaza P2P software, now completely opensource. Audacity Completely free audio editor, with some really useful features. Allegro Very useful if you want to make games. Firefox Powerful and fast mozilla based web browser.
There have been rumours of a google browser for ages. I recently read that they hired the lead programmer on firefox. As you may know firefox has recently been taking up a large portion of internet explorers market share recently.