Dymero - 10:53 pm on Sep 10, 2013 (gmt 0)
Maybe I missed it, but I don't think the OP mentioned linking the blogs together.
He didn't, but there are other ways to find a paid link. One way is to look for certain patterns in how the text around it is written. Or, in this case, they could look for the form URL and a certain copy that's used to get people to fill out the form. When you're churning out the sites like in this model, you're probably going to keep a lot of things similar for simplicity's and speed, especially if you're spending some time on making your initial posts look legit.