If you are shopping online and not earning rebates on your purchases, you are throwing money away!
I've written about rewards programs, where you can earn shopping rebates (or points you can convert to cash or free gift certificates), for several years on my main website,
I've put together a quick list of a few alternatives to MyPoints.com for people who might be concerned about their recent sale and want to try out something different.
ClubMom Rewards - earn gift cards or merchandise for shopping online and offline, with competitive rebates. Co-founded by Meredith Vieira of The View (and soon to be of The Today Show), ClubMom is one of the few sites that allows you to earn rebates on the purchase of gift cards. (If you like to eat at Chili's or Applebee's anyway, why not pay for it with a gift card you bought through ClubMom, earning 10 points per dollar, equal to a 5% rebate?)
Ebates - earn cash paid quarterly (by check or PayPal, when you've earned $5 or more) for shopping online, with pretty decent rebates. They have a great coupon center arranged alphabetically by merchant, so you can combine discount coupon codes with your rebate for extra savings.
QuickRewards.net - earn gift cards or cash for shopping online or completing various offers like signing up for newsletters. Plus, like MyPoints, earn cash for reading their daily email. Shopping rebates are very competitive and credit to your account very quickly (often within 24 hours). You can cash out to PayPal with no minimum and get paid usually the same day... or save up your earnings for a gift card or Disney Dollars.
These are just a few of my favorite rewards programs, but I've received rewards from all three, multiple times, and unlike MyPoints, I have a lot of confidence that they will be around a while (Ebates was launched in '98, QuickRewards in '03, and I think ClubMom's rewards program was also launched in '03).