>> Detailed
Glenn Alsop is one of the few SEOs that seems to really add to the conversation instead of just writing 2200-word articles based on Tweet from John Mu or Danny or whoever is tweeting at webmasters for Google these days.
The original of that Detailed article and graphic is several years old I think. Glenn has been on the case for a while.
>> generic content
I mentioned this with respect to lodging a few years ago. It had become basically impossible to rank a page for "best hotel" because it would always be overwhelmed by "best hotelS" articles. and these were overwhelmingly auto-generated. When you click in, they have the wrong photos and tons of other errors. They will have a photo labelled as a thing that is literally 50 miles away.
At a certain point, I told people that if we wanted to rank for those types of terms, we would need a really good "best hotelS" article and we would need to have the confidence to link out to competitors. That was a no-go.
I thought it would work though. Our hotel was $500/night, which is not for everyone (shockingly, though, not all guests are 10-percenters, let alone one-percenters). Anyway, I thought we might do okay an article that had us as best for couples, best for families, best for reunions, best pet-friendly, but linked out to others for best budget, best for college students, best for [other group we were never going to sell to anyway].
All that to say that 10 years ago, it was possible, even fairly easy, to rank for "[term] hotel" across quite a few terms, then we just saw all those articles get pushed further and further down by auto-generated drivel.
