Duplicate tags at joomla

[niaziblog]

hello my friend
i create menu for tag
menu url for tag is : yoursite.com/tag/tag-name
but every tag show with 2 url
yoursite.com/tag/tag-name
yoursite.com/tag/tag-id

please view this image from google webmaster

[niaziblog]

Who does not have a solution?

[Rickie]

The best advice I can give you is to insert noindex and nofollow tags which will help you avoid duplicate content. That way, Google will only index quality content relevant for the search query.

[AndrewSkyler]

I dig thing up for you
The fix to the limitstart pages is an easy one. Open /plugins/system/sef/sef.php and find the lines:

if ($uri !== $link)
{
$doc->addHeadLink(htmlspecialchars($link), 'canonical');
}
and change it to:

if ($uri !== $link)
{
$link = str_replace('?limitstart=0', '', $link);
$doc->addHeadLink(htmlspecialchars($link), 'canonical');
}
Tell me if it working