Content_ed - 12:17 am on Oct 21, 2007 (gmt 0)

I only noticed this week that you can do URL channels for whole directories, not just individual URLs.

At the same time, I'm beginning to suspect that channel URLs can go wrong if you use them for related pages that require different ads. Take the example of pages about red widgets with blue knobs, with green knobs, with brown knobs, etc. We call it the red widget channel. Over the course of time, perhaps years (it's been around that long), there seems to be a lot more advertising of red widgets with green knobs on the pages about blue knobs and brown knobs. I think it's because the green knobbed widgets have the greatest number of page views. But people with blue and brown knobbed widgets usually aren't interested in the green widget ads. I can see where it makes sense from Google's perspective, if they are trying to honor the channel as a logical unit. But who knows.