Panda, the famous Google algorithm update, has been modified once again back in September. Back then Google announced upcoming iteration via its employee Pierre Far on Google+ as follows:
“Panda update rolling out
Earlier this week, we started a slow rollout of an improved Panda algorithm, and we expect to have everything done sometime next week.
Based on user (and webmaster!) feedback, we’ve been able to discover a few more signals to help Panda identify low-quality content more precisely. This results in a greater diversity of high-quality small- and medium-sized sites ranking higher, which is nice.
Depending on the locale, around 3-5% of queries are affected.”
Since then slightly modified algorithm has settled in and its impact proved to be apparent with winners and losers being easily recognized. As always the iteration is aimed against the low-quality content but the perspective of favouring smaller and medium websites with quality relevant content makes it more interesting. And that has been the case so far as those websites are enjoying their unexpected turn in fortune within SERP.
On the other hand there are certain types of websites that have been hit hard by the Panda 4.1. Among those we can classify websites that somehow aggregate their content (“aggregators”), these include lyrics webpages, medical portals etc.
Nowadays the rollout is almost finished and web administrators are able to assess to what extent their search engine presence has been influenced by Panda 4.1 and can take particular actions.