You can definitely earn a steady income online - it just depends on how much you want to earn. Earnings will probably vary a bit month to month as well but it is possible to do this just as a writer. I currently earn around $100 or more (up to $500) a month by just writing online and creating my own websites with useful information. Most earnings are from hubpages and adsense plus amazon commissions. It takes a while to build it up but if you persevere you will get there.