Radio Shack WILL back down...they don't need your address as much as they need your $$$$.

As to groceries...when local Safeway started this crap, I complained and the clerk said in a low voice."just give some other name...you can be Abe Lincoln if you want"
But our 'major' store here, Giant Foods, which is now owned by Royal Ahold of the Netherlands, finally made the system such that **ALL** specials are limited to those who have registered...you got no card, you get NO discount! I am working on finding different stores...and having worked my way thru college as a grocery checker, I am a good judge of them!

(By the way...I am the world's best grocery bagger, and can load paper bags SAFELY!..I used to teach it!) The plastic ones are impossible to 'arrange' neatly, so I take the re-usable mesh bags (and sometimes paper ones) and SHOW them how I want things done...and stand right there and do it over myself if they don't pack to suit me! The deal with paper bags is that they no longer can use the old-growth timber for making paper, so the fibers are shorter & weaker and the bags are not as strong as they were 30 years ago!)...but a little care, and they will work fine.

(And yes, CVS stores WILL use their own cards to give you discounts if you whine..*grin*...(so far, anyway)