algorithm

In early September, Google implemented their biggest algorithm overhaul in more than 10 years with Hummingbird and no one knew about it for nearly 30 days. Why? What was so subtle about Hummingbird that we couldn’t even tell it was happening? Unlike Panda and Penguin which acted as corrections to existing algorithm data, Hummingbird was a rebuild of the system. They took the engine apart, replaced important components and put it all back together. In…