[avenius]

It's funny - my group of friends used to be hardcore MMO gamers, but after a while the skinner box effect became so obvious to everyone that we could no longer bring ourselves to play them. We've been discussing whether the addictiveness of games such as WoW actually spelled out the death of MMOs.

[hinkley]

WoW has actually toned down the Skinner box effect. People would get stuck trying to repeat an event 10 times with a 20% success rate per try. If you have a lot of players then the number of people screwed over by getting the long statistical tail resembles the participant count of your forums. Bad press.

So you get credit for effort. Your odds go up with each attempt until you succeed. Rare items though, still Skinner boxes.