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NEW YORK (CNN) -- CNN Money's Maribel Aber has your top business and financial news on this Thursday, January 2.

Some Target gift cards sold during holidays will not work
Target has run into more holiday shopping trouble. The retailer confirmed on Tuesday that some customers are having problems using their Target gift cards at the cash register. "We are aware that some Target gift cards were not fully activated and apologize for the inconvenience," said Target spokeswoman Molly Snyder to CNNMoney. Snyder downplayed the number of cards affected as "less than .1% of the total sold during the holiday period," but declined to provide a tally of faulty cards. She said the retailer will honor the problematic cards. Customers should bring the cards to the guest service desk at a Target store or call 800-544-2943.

U.S. home prices growth to slow down in 2014
Home prices posted another big annual gain in October, although there are signs that 2013's rapid rise in prices is close to topping out. The closely-followed S&P/Case-Shiller home price index was up 13.6% compared to a year ago, the largest 12-month gain since early 2006, which was the height of the housing bubble. Prices have been improving at a faster annual rate every month for nearly two years. But with the prospect of rising mortgage rates, October prices were little changed from September. "Housing data suggest that we may be close to the peak gains in prices," said David M. Blitzer, chairman of the index committee at S&P Dow Jones Indices. He said prices are expected to rise further in 2014, but the annual gain is expected to be in the single digits rather than the rapid rise recorded for much of this year.

Millions of accounts compromised in Snapchat hack
Hackers appear to have posted account info for 4.6 million users of quickie social-sharing app Snapchat, making usernames and at least partial phone numbers available for download. The data were posted to the website SnapchatDB.info. By late Wednesday morning, that site had been suspended. The hack was seemingly intended to urge Snapchat to tighten its security measures. The anonymous hackers said they used an exploit created by recent changes to the app, which lets users share photos or short videos that disappear after a few seconds. "Our motivation behind the release was to raise the public awareness around the issue, and also put public pressure on Snapchat to get this exploit fixed. It is understandable that tech startups have limited resources but security and privacy should not be a secondary goal. Security matters as much as user experience does," the hackers said in a statement to technology blog TechCrunch.

10 apps to help you keep your New Year's resolutions
After you've finished working off your New Year's Eve hangover, it's time to get started on your resolutions. You let your goals slide in 2013 because you thought surviving the apocalypse on Dec. 21, 2012 was accomplishment enough - that's fair. But with thousands of self-help apps now available on the app stores for iOS and Android, you've got no excuse to be a lazy bum again this year. NASA is going to launch a spacecraft that will one day take astronauts to Mars, Google is going to sell you augmented-reality glasses straight out of science fiction, and Kanye will probably release Watch the Throne 2. If you are going to spend all your time squinting at a tiny cell-phone screen instead of interacting with other human beings, you might as well be doing something productive.

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