Millions of websites owners around the world are constantly putting an effort to get their Google page ranking and eventually increase traffic to their site. But in the past few years, Google has put forth its Penguin update  (to eliminate black hat SEO technique as well) and Panda update to improve its search result by fetching out most relevant and genuine web pages.
Google differentiates websites based on either poor quality website or a good quality website. SEO’s globally, had to change  their SEO strategy like wise in order to come under the Google radar and improve their Google page rank. SEO’s are already fearing for the next update. Google, now will penalize websites based on the following issues.
 Over optimized Anchor text:
Anchor text is the text which we use to represent the blue link that redirects to other pages, when clicked. When it comes to the usage of Anchor text that is linking to  you, Google expects those links to be natural. Earlier, people overly optimized their anchor text (usage of same keywords many times in your Anchor text) to match with the expected keywords. Moreover people pay to external sources to get unnatural links by focusing on specific anchor text. So Google might consider all this to be abnormal and think that the content in the website is not genuine. So you should avoid unnatural links and avoid focusing on specific keywords in your Anchor text.
Dynamic IP Shuffle:
This is an important aspect which is being ignored by most of the SEO gurus, especially after recent Google Penguine update. If your site is using any CDN ( Content Delivery network) which requires you to change the DNS Server to their DNS, then just be very careful before jumping into that. There are many CDN networks which use dynamic IP network for a website in order to reduce the site load time. And, if Google robots find different IP every time they crawl the site, Google mark the site as unstable and penalize the same, resulting in search ranking drop.
Fraudulent Backlink Strategy:
Before the Panda and Penguin update, some of the SEO’s gladly helped their sites getting good ranking by using fraudulent back link strategy. But now Google most probably would penalize websites getting back-link that is not genuine. Avoid back-links that are exchanged mutually amongst companies, automated backlinks, backinks that are earned by payment.
Overly optimized keywords:
If a particular keyword is used in your content repeatedly again and again, then there is a chance where Google might trace out the pages and penalize it. Avoid the usage of unnecessary keywords over and over again. This sends a signal to Google of the poor quality of your content.
Apache/IIS Service Unstability:
Apache (Apache HTTP server) or IIS (Internet information service) are the website services in the web server platform that ensures the online presence of the websites. The problem here is, some times these services are unstable for certain websites, causing frequent downtime. Googlebots frequently crawl the web, and when a site is found with such issue, Google might penalize the website.
Backlink from blacklisted websites:
There are tons of websites that are blacklisted by Google. And if there is a link pointing to your website from either of these blacklisted sites, Google will find your website to be similar too and most probably take an action against your website. You can demand for the removal of links to your site from the blacklisted sites.
Copyright issue:
You can come across many sites, where you can find information that is not their own content. Those contents are copied from various original external source and pasted as it is on the website, thinking that it would increase the popularity of the website. But what actually happens is Google finds out such websites to be involved in copyright issue and penalized them.
