What is a good way to keep track of your credit card transactions, to reduce likelihood of fraud?
There are some tools that might help you. For example, I have an "Expense It" application on my iPhone, where I can type in a purchase while still at the cashier, the idea is to track expenses on a trip, but the implementation will suit your needs perfectly. Keeping slips is a way to go too, but I personally don't like that because I'm a messy person and after a couple of days all the receipts are gone. If you can keep track of tons of slips - you can just do that.