You can add a person to your block list if you no longer want to receive any comments, reviews or information relating to that person in LittleBigPlanet™ and LittleBigPlanet™ 2 or on LBP.me. Adding a person to your block list prevents that person interacting with you and you from interacting with that person in LittleBigPlanet™ and LittleBigPlanet™ 2 or on LBP.me
Please note! Blocking a person does not block them from sending you PlayStation®Network messages. If you no longer want to receive PlayStation®Network messages from a person, go to the PlayStation®3 XMB™ menu or PlayStation®Vita home screen. See PlayStation®3 or PS Vita User's Guide for details.
Looking back at my levels, on one hand they remind me of the good old LBP 2 memories; on the other hand, I found them are not as good as I thought back when I was still a LBP 2 player. I'm having troubles importing the DLCs that I bought for LBP 1 and 2, as something's wrong with my transaction history, fortunately Sony is helping me out to deal with the problem. Looking forward to make something with the new tools though!