aristotle - 2:17 pm on Feb 18, 2013 (gmt 0)

Jez123 said Yes, it's the same in my SERP. In fact only one site is left from the lot I used to comoete against. I would love to hear some theories why this has happened.

My theory is that Google added a section to the algorithm that can identify pages that are "too good". In other words, their information is "too relevant" and their quality is "too high". Therefore, says Google, there must be something wrong with them, since nothing could really be that good, and so we'll drop them 600 places in the rankings. This is my "Too Good" theory.