If you're like me you've spent some of the holiday season reconnecting with family and friends, and receiving Christmas wishes of one kind or another. This makes it a great time to take 15-20 minutes to update your contacts, whether electronic or paper. Make sure information is correct, delete any outdated contacts, and if your system allows, put your most frequently-contacted people into an important folder or at the front of your book. At my house, we also post a list of important numbers by the phone (doctors, schools, grandparents, parents' cell phones, poison control) and inside a cupboard we have a further list of information including health card and account numbers. This came in really handy during the ice storm, when we had to haul out an old non-cordless phone and our cell phone batteries had finished. You'll note I have not recommended a particular system here. The best system is the one you apply. That said, I have heard great things about Brewster for iOS and Contacts+ for both Android and iOS. I also happen to like the old Rolodex. What's your killer trick for keeping your contacts up-to-date? Photo: iStock