[mauricecheeks]

Simply not displaying who rated you up or down (just like on here) is the first step towards that.

That is definitely something that has been a consideration since day one though. Epinioins was widely disqualified as a reputable source because people formed such "cartels" to take advantage of their paid review model.

[mukund]

But still people can open multiple accounts or ask their friends to log in and hike up the karma? They can manipulate the reviews and swing it in their favour