The glory days of ad filled MFA sites are nearly gone. In recent months google has been cracking down on the sites giving the canned reason of "your network of sites does not meet our quality guidelines". I've seen people on black hat forums all over the net freaking out over this frantically looking for other ways to monetize their sites. In reality all you have to do is maintain a level head about things. I for example have opted to build nicer niche sites with quality content. I know what you are thinking. Isn't that white hat? Yes it is, and it makes google happy. It's how you drive the traffic to such a site that gets darker. Most of you know about my software and what it does so i'm not going to harp on that. Instead i'm going to give a small tip. Think arbitrage, but on a larger scale and without paying for the traffic to the target domain. Long tail keywords on cloaked throw away domains are a great way to accomplish such a thing should anyone ever have the desire to do so. I've spent the last week and a half reading search engine patents and research papers on everything from LSI and phrase ranking to spam detection and content shingling. It's opened my eyes to more than a few things. What i've shared above is just a taste as i'm sure my subscribers can attest to. lol
I either write it myself or put a twist on an existing article on the subject. Duplicate content doesn't matter on the target site since you don't need or expect it to rank well for any of the keywords. Your main focus is having a high enough quality site to get past a manual adsense review while sending traffic to said site using throw away domains. No one is going to get a high paying keyword ranked well in the search engines without some major work which is where the free arbitrage comes in. You just have to think outside the box a bit here.
Not really. The target domain can be anything you like really. I typically go for subject related domains, but that's just me.