First of all, hello, I'm new to the forums and looking forward to getting to know everyone and getting some good tips along the way! I have never joined a webmaster board, I've just been searching for information on google for the first few months of my endeavor, so I'm excited!
On one of my frequent google searches for SEO, I found something that I think is a little weird. Their website is:
Underground Link Building and I found them by clicking their google text ad on the right side of my google search. I downloaded their free 21 page explanation of how to get great free automatic google ranking. At one point, he mentions that it is considered "The dark side of SEO".
His technique is exploiting the trackback system that most blogs offer. I have never tried it, so I want opinions from others in the business.