I have written about the boundaries between value and creepy many times - are few examples are linked here, however this is a good one as it shows that one is about detail, moving, real time and what others can find out about you without you knowing - the other is about sentiment What is interesting is that both require the same level of detailed knowledge, it is all how it is presented that makes one acceptable and one creepy... Previous Blogs on creepy For non Harry Potter readers - from Wikipedia..... The Marauder's Map The Marauder's Map is a magical map of Hogwarts created by James Potter, Sirius Black, Remus Lupin and Peter Pettigrew while they were at Hogwarts, during which time they gained extensive knowledge about the school grounds, such as its various hidden passages, from their frequent night-time adventures together. At first glance, the Map is simply a blank piece of parchment; but when the user points his wand at the Map and says, "I solemnly swear th