like the one Facebook used to localize its site?

I am planning to use SlopeOne algorithm to predict if a gamer can complete a given level in a Game or not? Here is the scenario: Lots of Gamers play and try to complete 100 levels in the game. E...

Sorry if this is well known but Googling for my answer only came up with links about making Google Wave gadgets. My question is, are there any Google Wave gadgets that allow for better collaborati...