If you're living in a house out in the sticks that doesn't have fixed-line internet, or even a house in the city with a terrible ADSL connection -- like me -- then you have an alternative, provided your download quota requirements aren't too high. D-Link's DWR-921 is a router that you can plug a SIM into and have instant fast 4G access, as long as you're happy to pay Telstra or Optus or Vodafone for mobile data.