The Internet is great because it helps me save money (it helps me spend money too but that's a whole other topic).
Here are some sites that I use regularly to keep up on deals and keep more money in my pocket:
Slickdeals- Check this site frequently for user submitted deals (I am borderline obsessed with it!)
Hot Coupon World- Lists all stores and their deals in one place (great for early sale paper previews)
Ebates- My favorite cash back site; I always check here before I shop at any websites
