I am finally making a steady income from affiliate marketing with my site. I want to keep things growing. Should I stick with this one site and add more content, or should I create another site, and put the content there, as well?
If I understand you correctly, I don’t see the value in creating a second site.
I’d say to focus on the original site and scale it up as much as possible, and try to drive more traffic there through various means.
Since I don’t know what you are doing with your site currently, I can’t really tell you what to add to the mix.
But if you don’t currently have a newsletter, start one up and send it out regularly. Get a blog going, and promote your RSS feed for the blog. If you don’t have a blog, you should certainly get one going.
Also, consider investing in some targeted traffic to your site via pay per click search engines.
Do your best to try and focus on growing that one site into a power house.
If you have time and resources to create a second or third site with unique content, go ahead and do that. But don’t rehash the same content across multiple sites.