I love how you people really belief that this is a "real algo update", it is just a reshuffle of the index, your content and the amount of content your have has 0 influence, but the stock-prize and their shareholders do, that s why Google reshuffles their index every year, you call it panda updates...
Google calls it the ca-ching update, cus it will move a lot of webmasters to their over expensive adword program, look at all the sites that have ranked with crappy gibberish content after all these so called "panda updates"
Maybe if you buy content that cost $25- per 100 words you can beat it, but i'll bet that one nice panda morning your whitehat, expensive high quality content site is going to be gone from the index, why? because Google wants you to pay for their traffic so they can make their shareholders happy, that is why.