Tue Jan 22 20:03:10 PST 2019

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If your site is kicked out of the index for an automated spam penalty, it will usually
come back after 60 days after the thing that triggered the spam penalty has been
removed. If your site was manually reviewed and removed, the penalty period
might be much longer.
You can send Google a re-inclusion request via a form inside of Webmaster
Central after you have cleaned up your site explaining a sob story of how some
SEO company ripped you off. They prefer to receive this feedback from within
their webmaster console because it shows that you are related to the site you are
requesting a re-inclusion for. The key is to let them know that whatever was wrong
will not happen again.
If you are still having problems after e-mailing them a few times, you can call them
at 650-330-0100. Google usually will not reply to most bans. If your site is
manually banned for industrial strength spam, you stand a slim chance of getting
back in the index unless you are a large advertiser, have a well-known brand, or you
getting banned was a large public issue.
While they do not openly and publicly advertise it, I have been told by a few big
spenders on Google AdWords that they have received low-level, one-on-one
ranking consultations.
In addition to banning sites from the index, Google also has numerous filters they
apply. For example, sites with excessive duplicate content may end up in the
supplemental results. In addition, sites with excessive low-quality inbound or
outbound links may be placed on a reduced crawl priority or have a -30 ranking
penalty applied.
Google?s webmaster guidelines are located at:
http://www.google.com/webmasters/guidelines.html
Problems with Google?s Technology
Jeff Dean, a Google engineer, also talks about Google?s technology a bit in this
video at: http://www.uwtv.org/programs/displayevent.asp?rid=2459.
Since Google has the broadest distribution, people also work the hardest to game
their system.
Google tends to take the view that any relevancy manipulation is inherently wrong
and the SEOs are the enemy. In doing this, Google often prevents many quality
resources from ranking and ends up having substandard relevancy. It seems they
would rather make their own results slightly substandard than allow others to
manipulate their index.
Currently, Google?s algorithms place way too much emphasis on domain age and
trust. This will lead to a stale index, and worse yet, many spammers have been
buying old sites (or finding content management issues trusted sites) and adding
tons of spammy content to them. A relevant thread worth reading about how easy