RichTC - 1:02 am on Dec 22, 2006 (gmt 0)

Obvious penalty

This was hitting sites from the third week of November from what ive seen.

If you take the keywords you previously ranked for you will find your site almost at the end of the results. What the OP picked up on in relation to site listing after supplementals is what ive been seeing.

Sites containing a link to your site will rank above you for those words.

maybe it is a push by google to try and increase adword revenues, i dont know but some sites havent been hit with this and a percentage of others have so trying to find out what triggers your site being hit is the key to this.