If you want more light on my linkwheel picture here is the answer.
I have several Web 2.0 properties pointing to your Main site and the "article sites" in this manner that your money site is only powered in such a way that the juice of the whole wheel system is not lost nor retained in any other part of the wheel but directed to your Main site alone.
I will not be able to give further explanation of this structure otherwise, it may be loosing its effectiveness soon.
However, I am certain of one thing about this structure and that is that it works, and works well.
Coupled with High PR backlinks, Pings and Rss Submission, this wheel works at its best.
Thanks