Our information on removing penalties imposed by Google to websites within its index is gained through studying the relationship between language, code and optimisation across thousands of websites, multiple servers and IP's for over 12 years. - Take me to remove my penalty service.
What is a Google Penalty
A Google penalties apply to a website that's contravened a single or a number of Google rules. What this means is that Google has identified that this particular domain has artificially boost its rankings in a Google search result through manipulation or using by using means that look to artificially boost Google's algorithmic metrics for the domain. In short Google thinks the site is cheating.
Different types of penalty
Manual penalties, (Manual Webspam Actions) There are two types of penalties. Manual penalties, (Manual Webspam Actions) which according to Google are the result of actual humans looking into possible black hat manipulations of its search results; this can include Backlinks which all use the same keyword or keywords as anchor text. Of course The reality is Google does not employ hundreds of thousands of people trawl through the Internet connecting aggressive backlinking, incorrect anchor text and its relation to the website it's linking to. They have software, that looks to identify patterns
Algorithmic penalties
Then there algorithmic penalties; this is where something or some piece of code within a website has tripped a safeguard built into the algorithm. This could include for example white text on a white background, or simply pages that are guilty of keyword stuffing.
Sometimes it can be as simple as the amount of content is too small for the number of pages, or that there is excessive use of keywords in actual webpage names, the list is very long.
In the past which we have experimented with getting Google to drop sites out of the index. As we have thousands of websites to choose from, we can use this as an exercise to get into the minds of the creators and auditors of Google's algorithm.
Your penalty is most likely manual
However in our experience, it is relatively hard to tripped algorithmic safeguards. It actually takes a considerable effort on our behalf to ensure that the site is dropped out of Google. So if your website suffer a penalty, it is more likely to be of a manual webspam nature. However if your site uses old e-commerce platforms, these in themselves through incorrect use of redirects, through retaining pages and copies of pages even after they've been updated or deleted can cause problems of their own which can result in the site being dropped out of the index. Check your site.