Even with no product and no Web site, you can get paid for what and who you know
Making money online used to pretty much require you to have your own Web site, products to sell and some marketing savvy. But a new generation of dot-coms have arisen that will pay you for what you know and who you know without you having to be a web designer or a marketing genius.
But it's hard to tell hype from the real deal. I did a search on "make money online" and "making money online", and much of the information out there is just promoting various infoproducts, mostly about Internet marketing. I see why people sometimes ask, "Is anyone making money online besides Internet marketing experts?"

So I put together a list of business opportunities with legitimate companies that:

Pay cash, not just points towards rewards or a chance to win money
Don't require you to have your own Web domain or your own products
Don't involve any hard-selling
Aren't just promoting more Internet marketing
Give a good return on your time investment
In the interest of objectivity, none of the links below are affiliate links, and none of them have paid or provided any other consideration for their presence here.

These are legitimate companies with business models that allow you to get paid for a wide range of activities.