i maintain a website. until i checked today, it was the top-ranked site at google for a particular single word search.
today, it's NOWHERE to be found in the entire google search index.
I believe someone has sabotaged our google ranking by excluding us from the search there. our site has been rising in the rankings for roughly 3 years now. i contacted help support at google and they told me that you could tell if a URL was excluded by doing a search for the fully qualified url (e.g., http://mydomain.com/default.php). i've done that and the home page of my site IS excluded. So are most of the main pages accessible from the top-level naviation menu.
I have complained to google about this. I AM FURIOUS.
I would like to know if there is any way to determine outside of google why it may be excluded. I know that google lets you exclude pages by using META tags, by entering links on their site, and by using a ROBOTS.txt file (http://www.google.com/webmasters/3.html#B3)
Is there any thing i can do to find out why/how my site has been excluded?