Here's a list explaining why :
1: 60% of the surverys require you to download something , install something , or pay actual money.
2: More than 80% of the offers will NEVER pay your rewards when completed.
3:How does completing surveys have anything to do with bleach?
Instead of these retarted surveys/events people should just be able to buy shards from the shop using in-game money. Each shard could cost like 2000 in-game currencey.