You can make copies of coupons but the cashier will know. personally i work at a grocery store and i would know just by looking at it. if its in their weekly ad though they should let you use it more...
no, you're smart to be using them... they could save you a lot! Many middle-class people use coupons. People who use coupons are more likely to be good at budgeting, and may secretly be "prodigious...