We will then add these new doorway pages to your site using invisible links from your main page. None of your users will see them - but the search engines will. I will be checking your progress on a weekly basis. Constant changing of the doorway pages and modifications to the meta tags, amount of text and keyword placement in those pages. The search engines are constantly changing their algorithms and it requires regular attention to maintain standings.
Search engines are VERY finicky.
The algorithms change all the time and we subscribe to various newsletters, read information on the web and keep our ears and eyes open for any news that will keep us up to date with developments. The trick is to stay on top of things. Things happen that way sometimes. As long as we're still submitting and making changes, these sorts of drop offs won't last for long. These will be hits on YOUR server - not on ours.