Thanks for sharing map things with me guys! Yesterday my friend V. mentioned this nice website: Map your Mind. This website enables people to share their personal memories and stories about the city of Utrecht. You can sneak into someone elses head by checking out their personal city mind map. But also, you can add your own. Amazing concept, worth your time! (The website is in Dutch)
PS: Oh and there is also one in English, with nice tips about the city by Danniel.