Why does Seomoz report other values then Google Webmaster?

[menelik]

Dear Seomoz Community

I check my Seomoz ranking from time to and today I saw a big discrepancy between the reported domains linking to my site in the Site Explorer and Google Webmaster tools.

Seomoz reports 19 linking domains
Google shows 150 domains linking to my site.

Is there an explanation for this discrepancy?

Thank for helping me out

[KeriMorgret]

Hi Menelik,

The explanation is that we are separate from Google, and have our own servers and crawlers. Our server farm isn't nearly as big as Google's, and doesn't crawl as fast. Open Site Explorer updates about once a month, and won't show you all of the links you see in GWT. However, we do add more information than you will see in Google with regards to metrics, and you can see link profiles of other sites that you do not own and have not verified in GWT.

Hope this helps!

[Bio-RadAbs]

Also, Open Site Explorer updates every 60 days.. (I read that somewhere...)

[goodlegaladvice]

Its impractical to think that data sets from 2 places will be the same in fact if you took the dat that bing had vs google its going to be different what you have to do is choose one tool to set a baseline and then watch the improvements

[thisisOllie]

I can't officially answer this but I believe it's due to Google's reach of tracking links to be much more vast than SEOMoz's current capacity, despite itself doing a very good job.

If the difference is as big as that I'd be willing to bet that the majority of your links are coming from unseen blogs that Google has found and SEOMoz have not.

HTH