Wordpress urls /?p= and /tag/

Hello members,


I have the WordPress website with theme KARMA in it.
The problem I have is that after running the XENU I found that I have the following URLS:
www(dot)domain(dot)com/?p=1530
www(dot)domain(dot)com/?p=1533
www(dot)domain(dot)com/?p=1555
and more....


When I click on it, it goes to my human readable URLs, so it is duplication as for me.
So I don't know :
1. How they appeared?
2. Is there SEO impact by having them?
3. How can I delete them OR exclude them, so Search engines wouldn't see them ,because it is duplication.


My second question is about the TAGs . When we create a tag in WordPress it does create the page for it such as www(dot)domain(dot)com/tag/how-to-do/ .

If I created the tag "how-to-do" & tag "do-it-yourself" and then used it on the same blog post it will appears on both tag's pages

www(dot)domain(dot)com/tag/how-to-do/
www(dot)domain(dot)com/tag/do-it-yourself/

so this way I have the duplication, because both tags URLs shows me the same post.


Question:
1. Should I keep TAGs? SEO sowtware shows it as an critical error as the duplication.
2. If I'll delete the TAGs, sho I redirect them for SEO juice ?


Thank you a lot.

Well it's perfectly normal to have multiple tags for a single post, and therefore a little duplicate content on your website. It shouldn't do you any harm.

Default WP is a disaster for SEO.

Neither /?p and /tag are duplicate pages. Using tags correctly helps google to better understand the structure and the subject of your website. You can change permalinks from WP dashboard Settings-> Permalinks, preferably set them to Postnames.
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