You may want to check Facebook and Twitter before heading to the mall on Black Friday.
Hundreds of deals already are being advertised by retailers as diverse as OfficeMax and Old Navy. Office supplies chain Staples Inc. has used social media to advertise price cuts of nearly 50 percent for Friday on certain laptops, GPS devices and computer monitors.
One in five shoppers plan to use the sites in their holiday shopping this season, according to Deloitte Research. Dealnews.com and other Web sites also are offering applications and e-mail and other notification services to help shoppers track deals.
After Black Friday, dealnews.com's application will show sales for the following Monday, now known as Cyber Monday because it's the first weekday after the Thanksgiving weekend and many consumers shop from their desks that day.
- The Associated Press