I have a network of 6 websites, two of which have experienced a noticeable, but not devastating, loss of traffic. All of our content is 100% original and very few things are scraped because my niche is relatively unprofitable (in a spammer's eyes, at least). Less than 5% of my pages contain affiliate links, this network is primarily monetized through display ads and AdSense.
For my top keywords, my typical bounce rate is between 20% - 30%. On these same keywords, my bounce rate has actually edged up a few percentage points, so it seems that I've lost some of my most qualified visitors, not the other way around.
All complaining aside, I've not seen Google be so proactive about trying to make sure that their algorithm change doesn't affect legit sites. So thank you for that. I think we all understand why you did what you did, but I hope you make adjustments sooner rather than later. I don't rely on Google for all of my traffic and I actively diversify my marketing efforts. But your market share makes it impossible to not be negatively affected by something like this.
When so many small businesses work SO hard to abide by your guidelines, I would hope that you would do what it takes to restore our legitimate traffic ASAP. Even a loss of a few hundred dollars can make or break a mortgage payment, you know? :)