Favorite deals/coupons sites

These are the coupons and deals sites that I visit/browse on a regular basis:

RetailMeNot.com is a very good coupon site. I check it first whenever I plan to make a purchase online, and some of the coupons have been invaluable. The only thing I don't like is that merchants have the ability to block submissions, so sometimes I end up doing an extra web search for coupons anyway. (Hint: merchants, blocking your submissions on RetailMeNot doesn't stop us bargain-seekers from finding coupons. It just takes a bit more effort.)

Fatwallet is a pretty popular deal site, with a bustling Hot Deals forum. They also have a very, very useful cashback program, where you can get cash back from shopping on the web. Not much, but it adds up over time...I've gotten about $170 back since joining the site five years ago. They post contests in their Hot Deals forum from time to time, too. I actually won a $100 certificate to Sierra Trading Post that way once.

Slickdeals.net is another well-known deal site. No cashback program, but the forums are equally busy and useful, and they're (IMHO) slightly better organized than Fatwallet. I check the main page quite often for the best deals, or to look for up-and-coming deals on the sidebar.

Bing is ostensibly a search engine (IMHO, not as good a one as google), but I don't use it for that purpose. I use it for the awesome cashback program. Like Fatwallet.com, they give you a cashback rebate if you go through their links when purchasing an item online. Cons: coupons can and do void all cashback. Pros: their cashback percent is often much higher than Fatwallet's. Around holidays, they've often got cashback for popular stores like Walmart.com and BestBuy.com that are in the 20% range. For more info on how to best take advantage of their cashback program, please see this post on SlickDeals.net.

Just found this site a few months ago, and it fills a gap not filled by the other sites to quite the same degree - it tackles grocery and drug store deals and coupons. Slickdeals.net also has a grocery forum, but it's difficult for me to make heads or tails of everything there. Money Saving Mom breaks everything down into easily digestible bits. They also post links to the best printable grocery coupons, which I find useful.