Massive drop in organic rankings - but strange issues

[cashchampion]

Hi guys,

We experienced a massive drop in organic rankings on Saturday 29 October, a drop of around 80%.
I have received no notifications in webmaster tools
The site still ranks for its name so we are not banned
The site has been around since 2007
My mozrank and trustrank are very high (higher than sites that now still rank while we don't)
The strange this is the homepage doesn't rank for the main keyword (which it always did), but now a deeper page ranks for the main keyword, albeit on page 4.
Quite a few of our sites were affected, even though they target different industries, different countries, with different hosts, different unique content, different links (for one we havent even started link building and it was getting 250 UV per day, and now 8).

I am completely confused by this.
Any advice or direction would be extremely helpful.

Thanks so much

[eyepaq]

HI,

What is your domain name ? Is it by chance an EMD ? (exact match domain - a "keyword domain").

This happened late friday so it could be related with your issue.

(http://www.seroundtable.com/google-emd-update-15776.html)

If so that could be one of the reasons for the sudden drop  - but there can be others too If you will post the url we can have a look and post ideas and opinions.

[cashchampion]

Hi,

Thanks for the response. Nope this is not an EMD.

The site is www.travelsupermarket.co.za

[AutonectGlobal]

Hi Cashchampion,

I'd be happy to have a look, however I would require the URL.

Tony

[cashchampion]

Hi Tony,

Thanks so much. The url is www.travelsupermarket.co.za

[cashchampion]

Do you guys think it may have more to do with onsite than offsite?

offsite: I have a similar number of root linking domains as my comeptitors who are still ranking in their previous positions
onsite I thought it might be that I have a section for accommodation that has hundreds of pages. These pages all have unique content, but the content is quite thin, and the pages never actually get any traffic from google.

Should I just robots.txt these pages?