In my opinion I will choose:
1) start something that you like to do on the internet. Otherwise it's boring...
2) offer what people need (or sell what people want)
For example:
you can start an article service on which you sell articles for $6. Do not write articles by yourself, save your time and outsource your articles to other people for $2. You will collect the difference $$$ ($6 - $2 => you earn $4 for doing nothing).