What a coincidence, I also saw that page this weekend. I've been tracking it for a few days, and there are two things worth noting:
- These are pages that have been flagged as spam after a manual revision. So this means they are not penalized by Panda, but by a manual reviewer. I wonder what factors are triggers for this manual reviews.
- After checking it for a few days, I've seen some patterns in the sites being classified as spam:
Phone reverse lookups. These seem to never end, they are lists of are codes and phone numbers.
Auto blogs, especially some with very little content. If you check some of the blogs, they have just posted content scraped from article drectories.
Sites that don't work.
Affiliate stores, likely auto-generated Amazon Stores. I've seen several dedicated to high-priced bags (like Louis Vuitton) or shoes (Christian Louboutin).
It seems that Google is really making a serious effort to "destroy" any kind of auto-generated content, that is typically content copied from other sites (Amazon, article directories...)
What I wonder is if, in some of these cases, the sites were not really adding some value. Even though the content is not original, if you build a good, nice looking store centered around a particular category of products in, say, Amazon, you are indeed "curating" the big Amazon catalog and presenting the different available alternatives to customers side-by-side so that they can compare them and access them easily.
There's some value in that to me, even if you don't add additional content. Plus maybe some were.
It's also a bit frightening to think that some Google reviewer may look at your site and say "hey, this is spam" and you're doomed. I doubt they spend much time on each site reading your content, and checking if you add real value or not, they surely do a quick scan and make a quick decission. And it can be a wrong judgement...