Rules of Thumb / Forecasting Traffic vs. Revenue

I am looking for a resource that can give me some guidelines on web traffic generally turns into revenue for a generic legitimate website using adsense and other affiliate programs.

I'm not sure if there are any studies, graphs, or rules of thumb out there that can predict what a well monetized free content website should bring in.

In other words, if my site on Google Analytics says I have 10,000 visits in a month, how much should that site derive in revenue from affiliate programs, or other PPC/PPA/CPM programs?

How much at 50,000 visits in a month? 100,000?

Personally, I know of no resource that will tell you what to expect with "x" amount of traffic. There are so many variables that you can throw into the equation such as niche, etc.. that what you are asking is very broad.

If you are in fact getting a ton of traffic, Best thing I would do is test related products and see what works. You can have all the traffic in the world, but the important thing is "conversion" Test Either cpa offers or affiliate programs or adsense and then you will get a better idea. (my two cents)

I am thinking for from a business planning standpoint. What is a good metric to use as a goal?

Why create a good content website if you cannot predict a range where you can expect to all within at points in the future?

That would be a tough one to calculate. Would depend on so many variables.
- where is your traffic coming from?
- paid vs. organic
- where is your adsense located? what colors are you using? how big is your ad block?
- what is your topic?
- how well is your sales copy written.

soo many different things....

Sorry, I know this didnt help, I'm just thinking out loud.