I'm seeing an 80% drop on short and long tail traffic since Thursday. As if I have been penalized. That's after a 30% drop on April 12 after the 2nd Panda round.
I didn't do anything radical to cause this. I don't buy or sell links, I never farmed any content and always only do white hat SEO. All my content is original and is written slowly and carefully and I pay a decent amount of money to produce it.
I have many relevant inbound links from very reputable sources including the New York Times, Time, newspapers etc.
Many of my keywords are related to the word cheap which makes me thing that maybe they devalued certain keywords. on the other hand other keywords suffered to so maybe it's not the case.
I am still indexed for all my pages. Some of my keywords appear on page one of the SERP on one browser and are completely missing on other browsers and for other users.
I don't see any rhyme or reason to any of this.