This might have been in here somewhere else but did not find it so here goes:

1: You must buy BOTH the ps3 and pc version of the game and get their respective registration codes if you wish to switch between platforms and use the same toon.

2: You are only required to buy 1 CE version of the game for the bonus items. so save some money.

3. You must add the 4-4-4 registration code through the ps3 and link your SE account with your PSN account. Hence why my wife can not log on to the ps3 every now and then and play using her SE account. The game code is unique and linked only to me.

4. The PC version is added through the SE account site