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Walmart dominated the airwaves this holiday season and the investment paid off, according to advertising measurement firm Ace Metrix which compiled a list of the most effective holiday ads.

Walmart topped the list with a heartwarming spot called Christmas Magic which featuring a selfless child donating a toy he desired to the Salvation Army only to discover he was the recipient of the same toy on Christmas Day. Walmart aired more than 40 unique pieces of holiday-themed creative this season, making it the most prolific advertiser of the season, according to Ace Metrix.

Fort Worth, Texas — RadioShack has opened a new concept store in Fairfax Center II in Fairfax, Va.

The new concept stores feature a speaker wall where customers can compare 13 different speakers; interactive displays with headphone demo stations; technology explained by touch-screens and apps; brands such as Apple, HTC and Samsung as well as mobile carriers including AT&T, Sprint and Verizon; and a do-it-yourself area where customers can plan projects.

New York -- When compared with a baseline shopping period of mid-October of this year, total mobile visits on Thanksgiving and Black Friday increased 93%. Data from multichannel platform provider Usablenet also shows that overall mobile transactions increased 219% and total revenue from mobile transactions increased by 368%.

In addition, average order value increased by 56.3%, conversion rates increased by 93%, and shoppers spent an average of 47 seconds longer on site (the average length of visit was just more than six minutes per site).

Fort Worth, Texas -- RadioShack has opened another of its new concept stores, in Manhattan’s Greenwich Village neighborhood. It is Radio Shack’s fourth new format location in Manhattan.

The format feature an upgraded shopping experience, which showcases the company's new look, and incorporates interactive areas designed to help shoppers improve their technology profile.

Some features include:

Fort Worth, Texas -- RadioShack will open its newest Houston location as a concept store on Nov. 9. All concept stores in the company's portfolio feature an upgraded shopping experience, which showcases the company's new look, and incorporates interactive areas designed to help shoppers improve their technology profile.

Some features include:

Beloit, Wis. – Online coupon provider FatWallet predicts a larger selection and assortment of lower-priced Black Friday deals in 2013 as compared to the previous year. Notable predictions include:

Newegg, a leading electronics-focused e-retailer in the U.S., has kicked off this year’s Black November shopping event. The online retailer first unveiled Black November in 2010.

The company will be offering exclusive deals on the first four days of Black November across 60 categories, including computers, electronics, automotive, sporting goods and jewelry.

New York – Grocery discounter Aldi has been ranked the world’s “simplest” brand, with simplicity defined as a clarity of purpose that enables employee innovation and customer service. According to the annual 2013 Global Brand Simplicity Index from strategic marketing firm Siegel & Gale, Amazon.com is ranked second, followed by Google, which came out on top this year. The report is based on a study of 10,000 consumers in seven countries,

St. Louis -- Build-A-Bear Workshop plans an in-store shop in the FAO Schwarz  Fifth Avenue flagship in Manhattan. Opening in early November, the location is the first Build-A-Bear Workshop store-within-a-store in the United States. (FAO Schwarz is owned by Toys “R” Us.)

Walmart customers can now trade in their tablets at more than 3,600 stores and Sam’s Club locations nationwide. Similar to its new smartphone trade-in program, customers and members can receive up to $300 for their current tablet, which will then be applied toward the purchase of a new tablet.