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I'm having trouble with this as well but the 'ticket' link in the previous comment doesn't work. Not sure best way to get in touch but I'm trying to reactivate an archived campaign and it says I need to upgrade my account. I currently have 4 active campaigns so I should have room for 1 more. Thanks.

Yep, I think nofollow definitely makes sense sometimes. But if you have a short list of targeted tags and aren't creating dupe pages I think there is value in having those tag pages indexable. I see it as a way to easily create a page with focused content around a specific topic. If a site is using categories for that purpose then I definitely put nofollow on the tags, otherwise I use them sparingly.

The tags themselves aren't the issue, the result of using tags can be duplicate pages and that's what you want to avoid. If you have a tight list of tags and use them consistently they can be effective at creating content rich pages around a particular topic, and helping your visitors navigate your site. The problem arises when you use the same tags on all posts (thereby creating duplicate pages) or end up with a long list of tags, each one only showing 1-2 posts (again, ending up with many pages showing the same 1-2 posts). I like to predefine the list of tags I think will be useful and edit/add/delete as I go, versus coming up with tags each time I write new content. Kathryn