There were more cases in which Apple pulled from App Store some applications, because they said that...they did it because for some legal reasons. I can't think of what could 6 WiFi manager apps (for current case) have violated, but I'm pretty sure that they did it because that's what they wanted to.
Recently, Apple published a clear list of apps that will not be approved or will be pulled from the App Store if they exist, in case that they will not respect that list. Apple said that that apps were explicitly referring to adult content. A completely abusive behavior of Apple, in my opinion. That apps were not really referring at what they said. Their official explication was that they "want to protect children".
But lets return to what made me angry today. I searched for eWiFi into the App Store, a way better WiFi searcher than what Apple offers by iPhone's settings, but it was not there. I found that a number of 6 apps of that type were banished: WiFiTrack, WiFiFoForum, yFy Network Finder, WiFi Get, eWiFi, and WiFi Analyzer. I was not able to find anywhere a clear explication from Apple regarding this situation.
That's not cool, Apple. I was some time ago a big fan of Apple. Today, I am a fan of them because of their laptops. Aggressive and excessive restrictions from iPhone made me a fan of Google's Nexus One. I think that its OS is definitely superior at the moment compared to iPhone's.