Here we go again. Not long after apps with inappropriate content were pulled from the App Store, Apple removed all traces of another kind of app on Thursday—this time for less controversial reasons.

The victims of the moment are apps with Wi-Fi stumbling features, such as Wifi-Where, yFy, and Sekai Camera. These are applications that can not only show the location of every nearby Wi-Fi hotspot based on information from an online directory, but also can dynamically add more listings based on what Wi-Fi access points the iPhone detects in the immediate vicinity. There's just one problem; that feature, dubbed “stumbling,” is accomplished through the use of undocumented, private APIs.

More: http://www.macworld.com/article/146906/