White House condemnation of a free app has drawn substantial attention to it, helping ICEBlock become the most popular social networking app in the App Store, beating out apps like X and Instagram. ICEBlock alerts people to sightings of Immigration and Customs Enforcement (ICE) agents in their area, following a major immigration crackdown by the White House. Update: The US attorney general has said the app’s developer “had better watch out” – see end of the piece … more…