Where has my Domain Authority gone?

[donthe]

Currently my Domain Authority is at 36, I believe earlier this week it was at 39 and a few months ago it was 41 but I have no way of checking the Domain Authority history.

Why would my website's Domain Authority go down like this? I was hit pretty hard (well not so hard compared to other sites, but It feels pretty hard) by Panda 2.0 and I have been making many changes.

However, I am 301 redirecting the few removed pages.

All paginated pages (page 2,3 etc of each category) I have changed to "noindex, follow" meta tags.

For all "thin content' pages I am also using "noindex, follow". And all possible duplicated content I am also using "noindex, follow".

So the link juice should still be flowing. So where is my domain authority going?

Thanks!

[RyanKent]

The changes you made on your site can help your DA flow better to other pages of your site, but they don't affect the DA of your site.

If your DA has decreased, most likely it is due to one of two causes:

• some sites which were linking to your site stopped

• the sites which were linking to your site have been devalued, so their links to your site are affected

I would suggest you maintain a list of all links to your site in an Excel spreadsheet, along with your DA. By using this method you can be certain of your DA and the links used to establish it.

[donthe]

Thnak You for answering.

"- the sites which were linking to your site have been devalued,"

What would cause all these other sites that were linking to me, to be devalued by the seomoz linkscape algorithm? besides -some sites which were linking to those sites stopped linking to them.

If so, then there must be a global decrease of links? Did everyone remove their links? Maybe this is the general nature of the web, blogs get deleted.

I guess I'm asking, what other factors does the seomoz linkscape algorithm use besides links to determine domain authority.

Unless there has recently been a decrease of value attributed to links from low quality sites such as WordPress blogs and Blogger. I do have lots of links from blogs.

[RyanKent]

I am not clear on how the SEOmoz tool and metrics have been adjusted post-Panda. Perhaps someone else can share their wisdom on that topic.

An excellent overview of DA can be found here: http://www.seomoz.org/blog/whiteboard-friday-domain-trust-authority

[donthe]

They didn't transcribe that video

I'll have to make time to watch it. thanks.