Penguin 2.0 is all about inbound links and their credibilty and acquisition!
Link velocity is a term applied to tha speed at which a website aquires inbound links. If the site is getting a few backlinks here and there, then suddenly lands 5000 backlinks in a few days, Google’s flags are raised.
Mass blog commenting, automated link exchanges, fake profiles, irrelevant websites, low quality websites and article directories, link farms, overly optimized anchor text backlinks (keyword exact match), etc, etc. We could go on all day 🙁
Now we all know that a really good piece of viral marketing could, in all probability, cause such a leap in the numbers of backlinks being aquired, so I do believe that the big G will also look at the quality and type of website that is linking. At this moment in time I am just not to sure how they deal with a really good piece of viral marketing, maybe someone reading this has an idea, if so, please let us know 🙂
Please don’t think backlinks are dead, I still believe that backlinks are very important, along with social interactions that happen around your content, so Facebook, Youtube, pinterest, bookmarking, etc, all play a big part in the ranking of a website.
Anyway, lets let the man, Matt Cutts explain a little more ~