Canonicalization- This term generally used for Blogs where same 2- 3 urls occurs.

Canonical Tag is a part of the HTML header of a web page and should be placed between the opening & closing sections of the source code. It is the preferred version of a set of pages with highly similar content and also helps in directing link popularity to the preferred pages.

canonical tags are used to avoid duplication of a page.

Hello,

A canonical link element is an HTML element that helps webmasters prevent duplicate content issues by specifying the canonical or preferred version of a web page as part of search engine optimization.

Canonical Tag is used to avoid Duplication of a web page. Canonical tag is a HTML tag:
<link rel="canonical" href="http://www.abc.com"> or <link rel="canonical" href="http://abc.com"> which version you want to get indexed and show to users www or non www

Although canonical tags can help, they act as a suggestion and not a directive, augmenting the search engines' internal methods of sorting duplicate content. Google recommends that beginning webmasters shouldn't worry too much about innocently duplicated content, but you should refrain from deliberately posting duplicate content, and duplicates on multiple domains or subdomains should use a 301 redirect to avoid search engine penalties. Automated blogging and CMS software like WordPress and Drupal offer plugins that will automatically include canonical links.

it is used to avoid duplication of urls.

yes canonical tag is so important for promotional point of view. canonical tags are used to avoid duplication of a page.

Canonical tags are used to avoid duplication of a page.
Example <link rel="canonical" href="http://www.abc.com"> or <link rel="canonical" href="http://abc.com"> which version you want to get indexed and show to users www or non www....

Canonical tag is the one which specifies source URL of a particular page to the search engine such as google. Search engines use canonical tags to conflict duplicate content and assign search engine ranking value for that content to the page designated as the source URL.

Quote from: maxsamuel on August 10, 2012, 04:45:55 AM
Canonicalization- This term generally used for Blogs where same 2- 3 urls occurs.

What question do you really wanna ask???

Canonical tags are used to remove duplicated content.