I've used my MacBook all over, anywhere I can get a WiFi signal. Airports, McDonalds, car parks, the street, coffee shops, sitting in office doorways at 2am 'cause there was WiFi, back of a London cab at traffic lights giving the driver directions from Google Earth, checking a bus timetable at the bus stop etc. etc. My local coffee shop had a PC but it was always in use so I bought them a WiFi router so I could surf there on my MacBook. I'd take it with me even more if it where Asus U1F or Vaio TZ sized.