Here's a question that's bugging me. Google, Bing and Yahoo (and the lesser SE's) have apparently loved my site for years, because it's been page one for years for so many terms. If it were a crummy site, wouldn't there have been some kind of signal before? Anything?
It just makes no sense at all.
I use information and photos from manufacturers, but I re-write it, usually making it better. As for the photos, I get high-res images where possible, Photoshop them for color and overall quality, and feature them larger than my competitors to give the users a better look. If that's a "content farm", then there's a whole slew of sites still on page one that should have been gone long before me.