I'd suggest first finding out what happened to these sites before contacting Google as they are not your hosting support team and they will probably have nothing to say to you...
I am beginning to think someone just saw a footprint and did something to all my sites. I don't have private reg, and most of my wp blogs have the same login (dumb I know).
What's weird, is 2 days ago, some of my sites went offline and had some weird server error. So I went to hostgator chat, and they said someone had changed my .htaccess file so they had to reset it or something. I don't even know what that means or how to do it. It only happened on like 2 out of the 150 sites I have, so I didn't think anything of it.
Is there any way to contact Google and ask them if something happened?
http://www.rexswain.com/httpview.html
One more thing needed to check, in addition to all of the above suggestions - one of the most overlooked thing - the robots.txt file.
It could be one line that destroyed everything: Disallow: /
daudi
sounds like we have very similar campaigns going. i can attest to your situation. i have been scouring bhw the past few days waiting to see if someone complained about their sites being deindexed because the same happened to me. only thing i can tell u is that this has happened to me before and after a few weeks they started creeping back in to google and back to the 1st page. hopefully history repeats itself. i remember i did add some content and throw out a few backlinks and just stayed patient...not a calm and relaxed patient though more like a wtf omg wtf omg patient. past couple days my income has been literally 99% less. i believe my sites will bounce back like in the past bc some of my competitors sites that are very similar to mine are still on the 1st page so I don't think google is targeting a type of site.
He's right. It is most likely that your robots.txt files are sabotaged.
Robots.txt is a file ment to tell spiders (like the Googlebot) where not to index anything, most of the time it's sensitive information involved when these are used. If your robot files are changed, most likely google deindexed you because "you" requested it.
To be sure, check for caches of your sites ( cache:your-site.com ). If you got banned, there will be no caches. I'm not certain what happens if you get deindexed by the robots, but the point is - if there is a cache for your sites, you're not banned.
Also if google was to ban you, you would lose your adsense account.
Are your blogs updated from time to time? Take one blog, and do some backlinking, mostly social submitting or blog commenting - something that would get indexed fast. Might be your relevance is going down.
yeah man, it sounds like you are sandboxed. Check it after a couple of days or in google analytics about the status of your website.