I use several sites but the easiest one (as long as you follow the rules) is Bubblews. Some people complain that they don't get paid but I've never had a problem because I stick to the rules. You can claim your money when you reach $50 and so far I am making $50 a month mainly because I am not very active - I know some people are doing that and more per week and are making a good living.
Each article needs to be a minimum of 400 characters 9 excluding spaces, you can use it like a blog, don't copy work from other sites. You need a lot of connections to make the big bucks and the more interesting your articles - the more likely you will be to make money!
I also use redgage but can't get my money out because they won't send me the card!