If you understand the basics of keyword research, you can make a good monthly income from eHow.
eHow pays you a percentage of the ad revenue they make from each “How to” article you create. You can crank out a few articles a day with relative ease.
Try this for a month; assuming your article titles match up with what people are searching for in Google, you can make a significant income.
The great news is that you write your articles once and get paid month after month. I’ve seen figures of $100-$150/month for 30 articles. Make money writing for eHow.com.