When I was a student, like most students, I used to share a house with 4 others. We had lots of bills, each in a different person's name. It would have been good if there was a good web app for tracking who paid what and who owed whom what.
My website WeLoveBills.com does exactly what you want. It gives students a space to organise their house bills so that each user will always be able to see who has and who hasn't paid each bill.Please check it out. :)