It was about a year ago when Google's Penguin update rocked the webspace of bloggers and webbies. When that happened I did 2 things. First I tried to modify the few pages that were hit as described here:
http://www.megamasters.com/google-penguin-effects
(Note: my improvements worked until November when another update played tricks.)
Secondly, I developed around 15 brand new sites with 3 different concepts. By the end of this month I will have final stats ready. Result and stats are speaking clear words about the type and style of websites that rank well these days and concepts that no longer work as well as they used to. The article will be very long and in detail. Keeps me busy at this time.