Answer to your question as i am not pretty convinced that these sites will pay you regular. instead if you have excellent writing skills you can do the followings:

1. Start your own blog providing useful information and use adsense, affiliate or similar ad network to get paid. A blog with good information will have readers. As readers increases your earning will be improved.

2. Start article writing as service, depends upon quality people pay $3 to even $100 per 500 word article. There are no. of places where you can sell your services and show your blog as example work.

I feel 2 people will never starve in internet, a graphic designer and content writer. They will be always in demand. (IMO)