XShares floated a hip-replacement-and-knee-replacement ETF that they had to yank off the market in 2008.

FORBES: The Forbes List Of ETF Best Buys

In August, when NBC Universal announced plans to yank its shows off iTunes at year-end, Apple immediately cut it off for the upcoming season.

FORBES: The iFlop

So I yank them right off.

FORBES: Q&A: Sergio Marchionne

The combination of little benefit and potential risk underscores the need "to set a pretty high bar" for the off-label uses of medicines, Dr. Yank said.

WSJ: Hemophilia Drug's Off-Label Use Is Faulted

Dr. Yank and her colleagues used a database of hospitalizations to estimate national patterns of off-label use of the drug.

WSJ: Hemophilia Drug's Off-Label Use Is Faulted