If you’re an SEO then you probably know that Google Panda is two years old. The first Google Panda Update (or farmer update) was on February 24, 2011 targeting content farms (and those made for search engine sites) and it was a nightmare for webmasters. And then there were more updates to penalize websites that were over-optimized (Google Penguin), using exact match domains, pages with too many above the fold ads, etc.
I love all these updates as it improves the search experience of users and that’s obviously the goal of a search engine. That said, Google is STILL far away from that “perfect” search engine definition.