After being hit quite hard by Google Panda update in April, my blog's traffic went down from 3,500 unique visitors a day to 1,800 a day. I was too lazy doing SEO on my posts so I never really optimized my posts with the right amount of keywords and other formatting/positioning optimization. Was trying to find a good SEO plug-in to help me and found ClickBump SEO I used it to score my posts and got very low score in terms of SEO. Tweak my posts with the help of the plug-in and my traffic got doubled after Google re-crawled my posts! This is the first time (after a couple of years blogging) that I really see the benefit and importance of SEO. I only read and thought "yeah, yeah I had no time though". Now my eyes are opened.. I guess the next step is to increase good backlinkings, which I've been ignoring too these past years I made a post about the stats and changes on my blog if you are interested: http://www.cravingtech.com/goodbye-google-panda-im-a-sad-panda-no-more.html Hope it helps to open your eyes too!
The traffic is so huge, congrats. I don't know how to deal with the Google Big Panda because my blog is also affected by this new algorithm.