Even though quick results make black hat SEO tempting, it can get your site banned or heavily penalized for use of unethical practices. It is widely believed that the risk is not worthwhile for websites that plan to be operational over the long haul. Moreover black hat SEO methods give only short term results. White hat SEO can get your site ranked higher by use of ethical techniques, good content, appropriate keywords and a combination of smart marketing angles providing long lasting results so, always use SEO white hat methods.
Search Algorithm
That’s a technical term for what you can think of as a recipe that Google uses to sort through to billions of web pages and other information it has, in order to return what it believes are the best answers
Search Algorithm using by Google are – Panda Google's panda update rewards websites that have high-quality content. After this algorithm update, low-quality pages on the site affected not just the ranking for those pages but for the entire website.Google Panda is a change to Google's search results ranking algorithm that was first released in February 2011. The change aimed to lower the rank of "low-quality sites" or "thin sites" and return higher-quality sites near the top of the search results. CNET reported a surge in the rankings of news websites and social networking sites, and a drop in rankings for sites containing large amounts of advertising. This change reportedly affected the rankings of almost 12 percent of all search results.Soon after the Panda rollout, many websites, including Google's webmaster forum,became filled with complaints of copyright infringe's getting better rankings than sites with original content.
Penguin Google's Penguin update was targeted specifically at black hat SEO techniques using which some website owners had accumulated thousands of links from link farm. Thousands of such websites were penalized due to the Penguin update. Webmasters were encouraged to remove bad links pointing to their site. In some cases, they were able to do so successfully but often webmasters cannot control who links to them.Google penguin algorithm update that was first announced on April 24, 2012.
Negative SEO or Google penalty You cannot control who links to your site, it's possible for a competitor to pay link farms to point "bad links" to your website from poor-quality sites. Google's algorithms could penalize you for these links, which would hurt your search engine rankings. Bing has a tool that lets webmasters disavow bad links pointing to their website but Google does not. Some analysts have criticized Google for letting their algorithm be gamed with negative SEO.
Hummingbird Hummingbird looks at Page-rank — how important links to a page are deemed to be — along with other factors like whether Google believes a page is of good quality, the words used on it and many other things.Google started using Hummingbird about August 30, 2013
The Google’s algorithms is update day by day ,for stopping black hat techniques or methods, to know the history of Google’s algorithms go to http://moz.com/google-algorithm-change