Okay, so as I've been posting. Only 1 of my blog/site is penalised in this Google update. The entire blog is built on just one theme and so are all articles. Most articles written are 400-1000 words long, unique/non spun and written in proper English. There are no Ads above the fold and I'm using a neat theme. Everything is super and a reader would love to read a site like this. What penalty I got? Almost all the pages that were getting me traffic by being on page 1/page 2 were pushed down 8-10 pages. I checked for the most active pages and that is what happened. What I found just now? Some of the pages are still ranking near Page 2/Page 1. These are the same pages, articles that were written on 2007 and they were not touched when it came to onpage SEO. The keyword is mentioned ONLY once in the entire page making it very close to zero keyword density. Many of these pages were no where ranking on Google due to lack of Onpage SEO and I had edited several of them in 2012 begining to improve the onpageSEO factor and almost all crawled up in rankings post that. When I enter this one blog post page that is not penalised, is of extremely low quality and I'll hate to read such an article. Its small without an introduction or conclusion. Very crappy content, I can't believe I even wrote such articles 5 years back lol. What about the rest of pages that got penalised? All the other pages that were hit by this update were all keyword optimised (No not keyword stuffed or low quality content). Keyword was targetted in the title/url/ couple of times on the article. I think I maintained a keyword density of 1% or sometimes 1.5%. Any reader would find it completely natural to read such an article. But yeah those were definitely "SEOed" since I knew about these stuff and had a live example that all pages that lacked onpage seo were no where in ranking and upon improving onpage seo, many crawled to 1st and 2nd page. So what would a webmaster would do? If he sees improvement by doing Onpage SEO, would he say, no no what if google penalise me tomorrow? I better do no onpage and not rank than doing onpage, rank high and get penalised? What the hell is this? Something Interesting I'd like to try. I'd like to go back and reduce Onpage SEO I did on all the articles to make it look like a NOOB who knows nothing about SEO has written an article. Let's test out if this improves the rankings some day tomorrow. I'll give an update if it helps at all. One guy and many others have also shared that they used some Onpage SEO plugins on their blogs and those were penalised too. Is this update heavily levied on those sites that used Onpage SEO to get rankings up? But aren't all high quality sites doing the same? Anyone else has any relevant case study to share?