Want to no more about dropped domains and the best practices and solutions in buying your own ? Here is a very basic but great Infographic from krishna Infographics for you if you want to get up to speed with the tools and best way to go about it enjoy.
Looking at the metrics from the Infogtraphic that the guys over at positionaly produced, Google seem to be playing a guessing game, as to which links are good and which are bad. As from what I can see there is not that much of a difference in why you would or you wouldn’t be penalized. That being said there are a lot more metrics which also have to come into play.
The more people that send a Disavow Links list to Google the more Google will have to play with when it comes to their algo updates, which have both good and bad implications.