Be sure to read further down into the post as well as he gives another great tip for finding potential breakout topics from the article directories.

You should be able to work out other iterations of these techniques, but if you're stuck on that you can take a look at a post by Shawn that does that.

Click here to see the full discussion of Jack Duncan's Google Traffic Loophole trick.

There's also a helpful link that I'll repeat here that goes to a page called Unofficial Google Advanced Search