There is a site calledLog In that has great low prices on items that are worth being used. Almost everyone can use what they have to offer. Like right now, the daily steal is a rechargeable iPhone or iPod battery pack for 7.99. If you have the opportunity, check out the site and see what they have in store on a daily basis. Also, search through the past deals to get a hint at the things they have to offer.
There's also little longevity and customer loyalty when it comes to daily deals. I'm not much of a daily deal user, but I have little interest in whether I'm accepting offers from Amazon, Yahoo!, or Groupon. If it's a deal that interests me, the company supplying it makes little difference, and you'll find my opinion reflected by most consumers.