My niche site has had PR6 for about 2 years. About 10 days ago, it simply disappeared from the Google index. I have NOT been doing any funny stuff. The only new things are forum posts from my users and an occasional new article.

I cannot find it using site:mysite.com or links:mysite.com, yet if I do a search for "mysite.com" or "My Site Name" it shows all the folks who link to me or mention me. If I search for a snippet of proprietary text found only on my site, I get a bunch of garbage pages that go nowhere or redirect to my site.

I have a PR-0 whitebar, and I am told that if I was actually banned, I would show a grey bar. Can anyone confirm which one means 'banned' for real?

I can't get any kind of feedback whatsoever from Google, and I've sent in both help and reinclusion requests. I just want a clue, anything, to help me understand whether or not I'm actually banned, and what if anything I should be doing. Their silence is deafening.

Should I hang in there and keep bothering Google for some kind of response, or should I just think about scrapping www.contractorcity.com as far as Google is concerned?

I'm really at a loss as to what is happening and what I can or should do.

edit: I should also mention that I can still find my site using cache:contractorcity.com

thanks