It's about time to check out all the new coupons on Coupons.com, SmartSource.com and Redplum.com. Around the beginning of each month, new coupons start to appear on these sites while others disappear. (That's why it's a good idea to print any coupons you want today.) Other coupons will reset, which means that even if you printed them in March, you'll be able to print them again. Haven't yet printed coupons from these sites? You're missing out on some money-saving offers such as 75 cents off one gallon of any brand of milk that's available each month on Coupons.com.