How to Fix 5000 Not Founds in Webmaster Tools

[live]

Made a mistake and changed a whole bunch of URLS in my site Mac-online-slots.com. Most of the Not Founds are urls of translated pages that I decided not to post any more. I now have thousands of not found in Google webmaster tools. I have heard a few ways to correct this problem but am not sure exactly what to do. I was hoping someone could tell me the best way to eliminate these Not founds. I would be ever thankful.
One solution I was told to do a robot text with disallow. I had another helper from India do something that helped for a while but he is not easy to talk to and I am not sure what he did.

Regards
David
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[ck8795]

I would 301 the content myself (although that many might slow things down a bit). I know others might chime in saying to use the removal tool, but google isn't the only SE you need to worry about. Hopefully you didn't use a flat hierarchy. If you post some of the file paths (don't need to post the links) we may be able to give you some rewrites that can help all of the pages in that file. If it's a flat structure meaning all of the pages are in the root your SOL and have a lot of work ahead of you.

*before you sigh omg I don't want to take the long road in fixing this problem - this will teach you to pay more attention to how you build your site. There is nothing worse then having to write and test hundreds or in your case thousands of 301's*

Also to note your WP seems to create duplicate pages of your homepage. I was checking your site structure and came across three homepages indexed with different urls. You might want to get whatever is causing that under control.

[live]

Klaus,

So i tackled this job too late. Ow it will be a long road. Your very correct.
I had the pluging pro version of Global Translator on Mac r a while. When I decided to turn it off I should have just taken out the sidebar widget so it would not have translated any more. But instead I deactivated the plugin. The 1st mistake was letting loose the translator creating sub-acceptable quality, in the first place. The second mistake was deactivating it. I have just turned it back on and updated the Site-map. So perhaps this will eventually get rid of most of these Not Founds. But then I still have the baddly translated pages served.

On the other hand, with the remaining broken links, I have a plugin called Broken Link Checker that list all the internal and external broken links. So I will be at that list for a few days correcting links.

That will do most of it and the rest I will learn on the way. I will look at your suggestions. I am so stoked you took the time and energy to help out. I will be back before this is over. Some of what you have said I need to look up for more understanding. I will go over it better in the morning.

Really thanks again,
David

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[live]

So this post is after a good night sleep. When I awoke I wondered how the thousand urls that were once translated and then were "dormant", showed up on Google's Not Found list.
Attempting to answer my own question I would put forth a few guesses, coming from different ways:
A. that they were sitting in my theme in the old GT cache and were crawled. There were no links to them so they entered the list. I understand, however, that Google crawls more than just posts and pages. Google crawls root folders as well.
B. Or were these translations indexed a long time ago and Google searched for them and they were not there. By not there I mean there were no more links to them from the cache to the post on the site.

For me the answer will shed some lite on what is going on and how not founds are created.

Today's Sunday.... I hope everyone is taking it easy.
Well Wishes
David
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