Jez123 - 9:47 am on Feb 1, 2013 (gmt 0)
Try karoo.co.uk (hope this doesn't get censored) - it gives odd pre-penguin or sans penguin results that are very interesting indeed. Interesting to compare and see how penguin affects the SERP you see. For instance the 1 page (2 if you count the contact page) Amazon affiliate site is not present at #1 or even in the top 10 on karoo.co.uk yet a resounding #1 on the penguin filtered mainstream results! Anyway, try it.