Let the hive mind of Engadget get that for you.
"As someone who doesn't reside in the USA, I was wondering what would be the best way to get internet for my computer in the US for a couple of weeks? If it were Europe I know I'd look for some prepaid data. Is there anything similar offered by American carriers? A MiFi or a data SIM that I can tether from would work, but I'm trying to maintain a tight budget. Help!"
Two things:
1. I wonder if this has resolved the issue where Macs running Boot Camp could not see the drive. You could run OS X on the X-25M and you could run Windows as a VM, but you couldn't boot directly to Windows natively.
2. On the forums discussing the above Boot Camp issue, I saw numerous posts where people were claiming the X-25M was not firmware upgradeable. Glad to see they were wrong!
Does anyone know if item 1 is now fixed?