Where does web site traffic come from? For veteran internet developers this answer is easy.
I created this illustration to help newcomers quickly bridge a few knowledge gaps. Have you ever asked if you should advertise your web site in a newspaper? Yeah, I made this for you.
Although this list is far from complete (adware, one example) it should give you a pretty accurate picture of what works well. Each of these traffic sources has minted many new millionaires in the past years.
Feel free to republish this illustration on your own blog or web site using the html code below. If your not a scraper you may even get a bonus trackback.