[new_here]

> Maybe ultimately you open up spam fighting to your users. If you managed this well, you could harness a lot of energy.

Doesn't Google already consider that if a user returns to the results page (or clicks a second link) then the first link visited was not satisfactory. Seems like a pretty elegant solution.

[tonyedgecombe]

That's to Google's benefit though, they get another chance to present some adverts to the user.