How woud you deal with Blog TAGS & CATEGORY listings that are marked a 'duplicate content' in SEOmoz campaign reports?

[RoyMcClean]

We're seeing "Duplicate Content" warnings / errors in some of our clients' sites for blog / event calendar tags and category listings.

For example the link to http://www.aavawhistlerhotel.com/news/?category=1098 provides all event listings tagged to the category "Whistler Events".

The Meta Title and Meta Description for the "Whistler Events" category is the same as another other category listing.

We use Umbraco, a .NET CMS, and we're working on adding some custom programming within Umbraco to develop a unique Meta Title and Meta Description for each page using the tag and/or category and post date in each Meta field to make it more "unique".

But my question is .... in the REAL WORLD will taking the time to create this programming really positively impact our overall site performance?

I understand that while Google, BING, etc are constantly tweaking their algorithms as of now having duplicate content primarily means that this content won't get indexed and there won't be any really 'fatal' penalties for having this content on our site.

If we don't find a way to generate unique Meta Titles and Meta Descriptions we could 'no-follow' these links (for tag and category pages) or just not use these within our blogs.

I am confused about this. Any insight others have about this and recommendations on what action you would take is greatly appreciated.

[lavellester]

You could implement the canonical tag to eliminate the self-created duplicate content.

Hope this helps!