I tried out JoikuSpot with my Nokia N80 and notebook. Its simple to setup and worked pretty well. This is definitely useful on the road.
This method can’t beat 3G modems since they can go up to 7.5Mbps. The Nokia N80 only supports 384 kbps. But its better than buying a dedicated 3G modem for me because I don’t need to use it often between ADSL points.
If you don’t already have a 3G phone it might be cheaper and faster to get a 3G modem.
I checked Mobitel and Dialog for 3G modems a few months ago. Back then I was on Linux only and they didn’t have drivers etc. This should work on Linux as well since its on WIFI.
JoikuSpot has a few limitations at this time. It only supports HTTP/HTTPS and the WIFI hotspot is not secure. They say other protocols and security is on the way.
Here is the introduction from the developers:
JoikuSpot is a free mobile software solution that turns a Nokia Smartphone to a WLAN HotSpot. You will carry internet in your pocket. Connect your laptop to web everywhere! FREE — INSTANT — EASY