I guess I was lucky. Had a commission in the first month. A grand total of 25 cents. Was receiving decent commissions after 3 months, but I still am not to the point of where I know we can be. The 9-12 month estimate is a good one, it could take up to 2 years before you are really doing much. And, this assumes you treat this like a full-time endeavor. The days of spending a couple of hours a month on your site are over, this industry is way too competitive for that to work.