Buxfer allows its users to track their personal finances as well as regulate and organize loans and IOUs to friends. It lets you keep totals of what you owe and what is owed to you, as well as divide bills.As an added bonus, users can log on to Buxfer using their Google, Yahoo, Facebook, AIM or Open ID logins to eliminate the account creation hassle. Buxfer also displays your spending habits in the form of a pie chart with slices designated to categories like food, leisure, rent or whatever you want. It has auto tagging which places your bills in the correct category.