As reported on 24/7Wall St. they have compiled a list of brands that may disappear in 2011 which includes, Kia Motors (they are a part of Hyundai), Readers Digest, Dollar Thrify, Zales, Blockbuster, T-Mobile, RadioShack, Merrill Lynch and Moody's.
We are all aware of the change in rentals of DVDs etc especially since the advent of Redbox and NetFlix. Blockbuster may be around as a company as mail or internet-delivered but the brick and mortar business is dead.
Dollar Thrifty Automotive is for sale with Hertz is a potential buyer as is Avis. T-Mobile is the no. 4 cellular company and only has 34 million customers and faces three larger competitors.
RadioShack is the one of the oldest retailers in the US. It was founded in 1921 and is currently a takeover target. The company may be bought out by Best Buy.