Use NSIndexPath.row because NSIndexPath.item is supported in iOS 6.0 and later.

For http://developer.apple.com/library/ios/#documentation/uikit/reference/NSIndexPath_UIKitAdditions/Reference/Reference.html NSIndexPath.item is supported in iOS 6.0 and later. 
If we want to support iOS 5.0, we must use NSIndexPath.row or Application is crashed when 'KiiUser control' tab is selected.