There are many many things to market through the internet, but you need to pick and choose carefully.  In order to make money for the long term you need to be able to offer value to your readers, things that work. It is easier to sell something to an existing customer who thinks you provided good value the first time than to find a new customer from scratch.

It is also important to me that I act with integrity, that people do get value.

For eight years or so I taught and sold a couple of programs for trading options on the stock market.  But the sad fact is that only about 20% of the population should try trading options, shares, or currencies.  To be sucessful over a period of time any trader needs to master timing.  If you are the type that always turns up for an appointment on time, arrives at a destination in the car on time, no matter what the traffic was like or even if it was the first time you were going to that destination, then you have a natural timing ability and maybe you will make a sucessful trader.  If you do not have that sense of timing I would strongly advise you look to make money in other ways. Find another way of making money on the internet.