DEALS!
Slickdeals
Slickdeals.net is by far my favorite deal site out there. It is focused on electronics but also provides deals on things such as food, clothes, services, coupons, and more. There is so much on the site and you can spend hours exploring all the options it has. Part of the fun is you never know what you will find each deal on slickdeals. I check it multiple times a day just to see what new bargains have been spotted. I highly recommend checking this site out. Always go here first before making your next electronics purchase. It may surprise you how much you can save.
Fatwallet
Fatwallet.com is another mega deal site that compiles massive amounts of deals and coupons. They provide cash back at hundreds of major online retail stores. All you have to do is create a free Fatwallet account and click on the store page through Fatwallet. You can get up to 20% cash back on some sites! I don't know about you but getting cash back for the purchases I'm already making sounds like a good deal.
Ebay
ebay.com is a great tool to use when searching for hard to find products. I always check ebay before I make a purchase cause someone could have it going on an action for cheaper than a store or website. Just be careful to buy things for a seller who has good ratings.
Craigslist
Many people are hesitant to use Craigslist.com. I have bought and sold around 30 different things on craigslist. If your looking for some cheap electronics you can find them here. Sometimes it can be a little frustrating setting up a meeting with the seller/buying and sometimes they don't show up. but 95% of the time I have had everything work out just fine and gotten really good deals. Most of the stuff is used but you get to check it out before you buy it which is nice compare to ebay.com.
This video shows you how to use ShoppingGenie to find the best deals online
Electronics deal blog
Icemonkeyblog.com offers some cool electronic deals that are pretty cool and sometimes very unique.
TechBargains.com
TechBargains.com offers some pretty good deals on electronics. They have a nice "deal alert" function where you can put in the item your looking for and they will email you when a deal comes up relating to that product.