Though I have not been writing for residual income for long, I have seen the potential for making money long-term with seo writing. For instance, I have seen my E-how monthly income rise by $5 a month since I started writing. Though this meager amount is nothing to get excited about now, it shows that I can build my residual income over the long run. So in short, slow and steady wins the race and it pays to be the tortoise rather than the hare.
That said, I think it is important to write as many articles as you can when you are starting out. I look at it like banking. The more money you are able to place in savings when you are younger, the more money you will be able to earn through interest. I see the residual writing game in much the same light. Compiling a large collection of articles on many sites early in the game, will help you see your residuals grow more in the long term.
Ofcourse, like any good savings plan, regular deposits are a must. Once you have reached an initial goal of 50-100 articles on any site, start a new minimum goal for each site. You could require yourself to write at least one article a week, or two a month. As long as you are contributing regularly, you can see steady residual growth.
Staying with the savings and banking analogy, make sure to also diversify your deposits. Bank articles in many different residual sites to see money from each. Each site will have its own positives and negatives. Having articles in many online communities and sites will help you establish your online presence and bring in more revenue. Some online residual sites to consider include ehow, bukisa, associated content, suite101 and hub pages. Any of these sites, with the exception of associated content, can be accessed by clicking on the links on the side bar of this page.
Remember that slow and steady wins the race. If you stick with it, you will see returns and growth. Good Luck!