Marcel Weiss's Library tagged duplicatecontent →  View Popular

2. place the file duplicate-content-cure.php in your plugins directory

3. By default, category pages will have the noindex tag added. If you wish to

allow your category paes to be indexed, just change the

$index_category_pages variable in the duplicate-content-cure.php file. See the example below:

Change

$index_category_pages = false;

to

$index_category_pages = true;

4. activate it on the plugins page

That’s it. Say goodbye to those pesky duplicate content pages for good.