Google is a big giant of search engine industry covering approx. 75% of total traffic over search engines. But this all is due to strict policies of Google through which it penalizes websites, web posts and other web masters and which in turn results in better user experience delivering optimized and meaningful search results and content to its users. For unnatural or irrelevant linking, post or any other material Google has very strict policies that can cause your website a great drop in search results over a time period of two or three months. Therefore it is recommended to spread your web presence only on relevant sites to avoid Google penalty.
But what if Google has penalized you and now you want to stand back in search results same as previous. If this penalization is by mistake then you can report it to Google crawlers through your Google Webmasters account. Else you have to focus on making your website more user friendly as well search engine friendly. Forget about bulk linking and all other tactics that you have been used till the date. Improve your website’s tags, formatting and stay focused with relevant and quality content. Also if you have misplaced your links then remove them; update your website’s sitemap.xml & robots.txt files. After a good on page rework of website now submit it only to quality search engine directories like Dmoz.org. While submitting, be very careful about relevancy and only post in the most relevant category. Choosing these small tactics may help you to make your website more search engine optimized and will prevent you from any Google penalty.