Grocery manufacturers are watching this Extreme Couponing show in a HUGE way, and they also pay attention to message boards for couponers and freebie hunters. I have a tool at work that lets me type in a search term and it goes through just blog entries and comments to find what people are talking about... I just use it to find marketing opportunities, but other departments do use things like that to find scammers, so I think the really extreme couponers are ruining it for the rest of us who just want to save a few dollars here and there.
Many big manufacturers are also planning to convert to coupons with holograms in them, so they can't be reproduced. http://www.retailwire.com/news-article/15819/cpgmatters-cpg-marketers-ready-to-roll-with-holograms