My six year old Wordpress blog with self-written original content has been hit by the update as well (http://www.ghacks.net). Traffic dropped by a huge percentage and I have no idea why. Many of my articles provide help on PC issues, or inform users about software updates, new browser add-ons and the like. I spend ten hours a day on the Internet finding the best content that I then post on my site.
My site is not a content farm, nor low quality.
I recently read that low quality pages can impact the "good" pages on a site. Is that true? If so, what is your official response to Wordpress tag and category pages?
I'd really hope that you re-evaluate my site or tweak your algorithm so that it is no longer considered low-quality by the algo.