url URL date not supplied aaron swartz has written up a warchalking faq that addresses the shibboleths and paranoia about discovering marking and using wireless connectivity is that illegal although i am not a lawyer i don t think it s illegal to make chalk marks on the sidewalk i know a lot of hopscotch players who d be worried if it was well is it immoral not at all warchalking is a helpful service to assist people in finding something they need an internet connection link NUMBER discuss NUMBER NUMBER URL NUMBER URL 