Find Related

A number of services have surfaced which allow users to easily find and bookmark links related to the Web site being viewed.

StumbleUpon

Sphere

Yoono

I was thinking about how these can be used to find related articles in newspapers. In reporting, one article on a subject could easily lead to the next this way.

Could newspapers incorporate this technology into their own Web sites? And if so, would it be paper-specific or lead also to related article in other papers?