Dos and Don'ts in SEO

Do Create unique content

Do Validate your code

Do follow Webmaster Guidelines

Do follow White-hat techniques

Do Choose keywords related to site

Don't use excessive keyword/meta tags

Don't use Black Hat technique

Don't prefer paid links

Don't optimize your site for Search engine

SEO Evolution and its updates

In January 1994
Yahoo! Inc. was founded by Jerry Yang and David Filo
In 1996
Yahoo! relaunches its search engine, powered by altavista
Ask.com (Ask jeeves) Founded by Garrett Gruener and David Warthen
In September 4, 1998
Google was founded by Larry Page and Sergey Brin
Page Rank was developed at Stanford University by Larry Page and Sergey Brin
In June 1998
DMOZ (directory.mozilla.org) launches
In October 2000
Google Ad words launches with CPM model
In December 2000
Google launches Google toolbar
In August 2002
Bob massa creates first paid link Network,"PR Ad Network"
In February 2003
Google acquires blogger, then launch word press
In March 2003
Google releases ad sense
In September 2003
Patrick Gavin launches Text Link Ads
In July 2004
SEO start to talk about "Google Sandbox"
In January 2005
"nofollow" tag is created with joint support from Google, Yahoo and MSN
In February 2005
Microsoft rebrands MSN as Live Search with its own algorithm
In June 2005
Google first introduced Sitemaps
Google Relaunches personalized search
In November 2006
Google, Yahoo, MSN announced join support for XML sitemap
In August 2007
Text link ads banned by Google
In May 2007
Universal search
In February 2009
Joint support for new canonical Tag
In June 1, 2009
Bing - created by Microsoft
In October 2009
Google and Microsoft sign deals with Twitter to gain access to Tweets
In April 2010
Launch of "Google places" rebranded local business center
In June 2011
Google, Yahoo and Microsoft jointly support structured data (Schema.org)
Google launched Google+ (Real-life sharing, Rethought for the web)
Google introduced the rel="next" and rel="prev" link attributes (improved automatic consolidation and canonicalization for "View All" pages)
In May 2012
Google introduce "Knowledge graph" (To find the right thing, Get the best summary, Go deeper and broader)
In December 4,2012
Google's knowledge graph expands to more languages including Italian, French, Japanese and Russian.
In August 20,2013
Google suggested that the 'Hummingbird' Algorithm.
In December 19,2013
Authorship markup disappeared from roughly 15% of queries over a period of about a month

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