It seems Google is now out to get websites that it has banned or dropped back into the search results index. This has been noted in several search engine forums as well as several Google employees’ blogs. Google’s direction to banned websites may provide small optimizing clues to all SEOs.
Now while this may seem like the best possible move Google could make to help rebuild lost relationships, it should be noted that this is a small test. It may be continued or it may not. Do not get too excited. Also, in case you are wondering who is and is not being contacted, I can tell you that websites with URL's like www.viagra-remedy-cure-for-all-ailments-known-to-man.com are definitely not going to receive an e-mail from Google inviting them back into the fold.
Google apparently contacted 100 webmasters whose websites had been dropped from Google's index regarding how Google would like to have them back in their index, granted the webmaster is willing to clean up the website to meet Google's quality guidelines for webmasters found here:
While we were indexing your webpages, we detected that some of your pages were using techniques that were outside our quality guidelines, which can be found here: http://www.google.com/webmasters/guidelines.html In order to preserve the quality of our search engine, we have temporarily removed some webpages from our search results. Currently pages from http://www.chefrevival.com.au/ are scheduled to be removed for at least 30 days.
Specifically, we detected the following practices on your webpages: On http://www.xlwidgets.com, we noticed the following hidden text: “XL widgets are the best widgets available online in widget entertainment and widget retail sales which is the basis for blue green yellow widget sales and services to our retail widget wholesale widget clients and widget customers world wide services”
We would prefer to have your pages in Google’s index. If you wish to be reincluded, please correct or remove all pages that are outside our quality guidelines. When you are ready, please submit a re inclusion request at http://www.google.com/support/bin/request.py
You can select “I’m a webmaster inquiring about my website” and then “Why my site disappeared from the search results or dropped in ranking,” click Continue, and then make sure to type “Re inclusion Request” in the Subject: line of the resulting form.
Search Engine News 
