@shiny012May 05.2015 — #If you want to improve your website then you website should have good relevant content.and should optimize your website urls and resolve canonical issues.
@SwashMay 05.2015 — #Canonicalization issue can resolve in two way first one is 301 and 302 redirection and second one is using nofollow tag in source code.
@richardstevensMay 06.2015 — #Canonicalization for SEOs refers to normalizing (redirecting to a single dominant version) multiple URLs.
Canonicalization can be a challenging concept to understand (and hard to pronounce: "ca-non-ick-cull-eye-zay-shun"), but it's essential to creating an optimized website. The fundamental problems that canonicalization can fix stem from multiple uses for a single piece of writing–a paragraph or, more often, an entire page of content–that appears in multiple locations on one website or on multiple websites. For search engines, this presents a conundrum: Which version of this content should they show to searchers? SEOs refer to this issue as duplicate content
To provide the best user experience, search engines will rarely show multiple, duplicate pieces of content and thus, are forced to choose which version is most likely to be the original (or best).