The MaxRoam User's Home Page
In addition to getting a SIM card that must be paired with an unlocked phone, MaxRoam users also get access to a Web site that's essentially a dashboard for controlling their phone.
Through the Web site, you can pre-pay minutes for your SIM (TopUp), buy additional phone numbers that will ring through to your phone (over WiFi and/or the cell network), manage existing numbers, and forward any of the numbers under your control to another number (eg: a landline or another cell phone -- perhaps a CDMA-based one when you're in the States).
For David Berlind's write-up on MaxRoam, see his post in ZDNet's TestBed blog.

























