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Our site underwent a major update in September 2012. We put the entire site in WordPress and did away with our static pages. Then, in February 2013, we moved our shopping cart pages from a subdomain to our main domain (in WordPress). In both cases, we had to implement a massive 301 redirect through htaccess as most of our URLs changed with the update. Our site consists of the shopping cart (WooCommerce), blog, and supporting pages. We noticed traffic starting to drop around the last week of November (2012) and it has steadily declined ever since. None of our shop pages have a pagerank with virtually all them showing a gray bar with question mark. Only the shop homepage has some pagerank -- that too from 4 previously to 2 now. Some of the words we used to rank very well for before, we don't even show in the first five pages anymore. At first, we thought it was a temporary situation that would self correct over time, but it doesn't seem to get better at all. All said, we have lost over 80% of our traffic from Google organic. Upon repeated reviews, the 301 redirects seem to be done correctly and we don't see any serious mistakes that could cause such a huge drop. So the question is are we missing something? Are we not looking at the right places? Any ideas where we might start looking? We're simply looking for ideas and a fresh perspective.