The prevalence of free/cheap and open Wi-Fi networks in coffee shops, airports, offices and hotels is a great boon to the traveling Mac or iPad user; it makes connectivity and remote work much easier than it used to be.
Source:
http://www.tuaw.com/2010/10/26/how-to-guard-yourself-and-your-mac-from-firesheep-and-wi-fi-snoo/
