The sooner we devalue the link of its SEO power entirely, the better.

I've run a small wiki for many years. I'm probably going to shutter it because it's such a target for link spammers. (MediaWiki's anti-spam tools aren't very good unless you have many dedicated editors.)

Now that a critical mass of people are using Chrome, I suspect that there is a much better signal in the haystack of user behavior data than back links. A much better algorithm in theory could be built using the actual usage patterns of discriminating humans rather than the link landscape of the web.