Matt said this algorithm update only impacts 0.6% of English-US queries. New exact-match domain (EMD) algo affects 0.6% of English-US queries to a noticeable degree. Unrelated to Panda/Penguin.

In 2012, Google’s then Head of Webspam Matt Cutts announced an algorithm change meant to reduce the amount of low quality exact match domains in search results. Cutts also tweeted, “New exact-match ...