Mishj,
You are incorrect. My site was infact from the Yahoo index. I emailed Yahoo to find out why their bot was visiting me but did not have my site listed, even for the most non-competitive keywords. Their reply was that I had a link farm. Which is far from the truth. My site is
http://www.enhancementresearch.com and I run a very clean and very well organized link directory, for link exchanges. There is not even a hint of a link farm. And yet they told me that it was a link farm. They told me to try again with a "re-review." The "re-review" also came back with the same opinion. Maybe I am wrong but I can not see how my site is a link farm. And again Mishj, they do ban sites.