Buyers click away as Cyber Monday sales jump 20%

— -- Consumers are clicking away today as they continue to scour the Internet for the perfect holiday gifts at the lowest prices.

Online traffic is up 43% from last year, says content delivery network Akamai, and online sales are up 20% over Cyber Monday 2010 as of noon ET, says IBM Smarter Commerce, a Web performance analytics firm for 500 of the largest retail websites.

Electronics are the most popular items, with sales up 26% over last year, and products such as flat-screen TVs and digital cameras are leading the pack, says PriceGrabber. EBay's Cyber Monday special this morning on a white Apple iPad2 for $449 sold out in less than two hours, says Richelle Parham, chief marketing officer for eBay North America.

Even with a flurry of online traffic, retailers appear to be pulling off Cyber Monday without a glitch, so far. Web performance expert Steve Tack says retailers have worked hard to deliver an online shopping season free of the website crashes and technical problems common in previous years.

"The industry has done a pretty good job of getting a stable site that is better at dealing with the demands placed on it," says Tack, chief technology officer for website and applications performance at Web-tracking company Compuware Gomez. "People only have so much patience. If a site is not loading fast enough, they'll abandon it."

Sara Mannone, 39, of Denver was enticed online this morning by Lands' End's promise of 30% off everything and free shipping. She says she didn't encounter any problems with the retailer's site and was happy with its customer service. "I even changed my mind after I had purchased something and e-mailed them, and they removed my item, no problem," the data researcher says.

Sears spent more than a year preparing for this holiday season's deluge of digital shoppers, says Michael Murray, chief marketing officer of online for Sears Holdings. In addition to ramping up overall online capabilities, Sears also focused on making it easier for shoppers to buy via mobile devices.

"We spent the last year really focusing (to make sure) our mobile experience was full and complete," he says. They focused on speed, as well as features and functionality, he says.

Online luggage and handbag site eBags also did testing ahead of time to make sure its site could handle Cyber Monday traffic. It's seeing a record sales day, up 46% over last year, says Peter Cobb, the site's co-founder. He says luggage sets and packing cubes are among today's best-selling items.