I started by doing pay per click campaigns, and I saw immediate profits. It took a few months before I started making what I considered “significant” profits. I think if you’re plan is to launch a gambling portal and do SEO on it, you should probably plan for at least six months of content and link development before you start to make “significant” profits, and that’s assuming you do things right. (If you do everything wrong, you might not ever make any money.)