Feb
24th
Sun
24th
Some big systems (such as Amazon reviews) appeared resistant to attacks due to the amount of effort required to overwhelm the large number of legitimate participants.
However, in large systems where there is a “winner-takes-all” (e.g. Digg or Google where gaming the system to get top rank will result in a massive amount of lucrative traffic), the benefits of manipulation can justify even quite costly efforts at spamming.”
— Greg Linden on the concern about manipulation of collective intelligence systems. Yes - they include review, rating, and recommendation systems.
