So, I thought one if the benefits of Kid's Corner was that other people couldn't mess your stuff up.
Well, my kids can access my saved games and work with my achievements.
Really, I don't see any benefits other than them not having access to my email and stuff.
Sent from my Verizon HTC 8X using Board Express
Windows Phone isn't actually built with a multi-user environment, so yes they share your game saves and profiles. The idea behind kid's corner is that they don't do greater damage than within the game itself. While multiple xbox account support would be awesome for a future update, it is still a better solution than what is present on competitor's platforms