Cats and Coupons

Do you collect points or codes from soda products? How many soda manufacturers have these programs? I know Coke has offered My Rewards for quite a while now. I have a My Rewards account, but half the time if I have a code I can’t enter it because the printing isn’t clear enough to read. Today, I went on a quest looking for contests for an xbox 360. My son’s been really wanting one for a long time. Anyway. While searching I found out that Mountain Dew also has a program to collect codes from their products. Not being a soda drinker I don’t know if they do theirs the same as Coke. Are their codes legible? Just wondering. Sometimes I think that the codes are purposely made hard to read so less people win.