Do you always grab for the tab, or do you and friends/roommates split even the smallest expenditures?
The first can leave you open to exploitation. The second can be aggravating if it becomes an exercise in, “SonyaAnn got the extra cup of ranch dressing so she owes 30 cents more.”
Treading that ticklish territory is the subject of my latest column over at MSN Money, “Your best friends’ bank: You.” (Edited to add: This article is no longer available since Microsoft changed platforms. Sorry about that.)