Financial newsletter 24/7 Wall St. on Tuesday tapped Research...

Financial newsletter 24/7 Wall St. on Tuesday tapped Research in Motion’s PlayBook and Netflix’s short-lived Qwikster as the “worst product flops of 2011.” Noting that products often fail because they are inferior versions of popular products, 24/7 Wall St. said, “there was no room for a poorly designed tablet” in a market dominated by iPad at the high-end and Kindle Fire at the entry level.” Netflix’s failure, on the other hand, was a lack of understanding of consumer sentiment and expectations for demand, 24/7 said. When Netflix announced Qwikster, customers were “outraged,” it said, noting that Qwikster failed before even getting off the ground.