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!"
Yes we have looked at getting a couple of these for mobile data acquisition (via USB). Major plus point is not having to port all our software across to WinCE or PocketPC, or change our hardware to suit suppliers who can support their platforms etc. This saving would pay for several OQO's alone. Also the dollar being two to the pound(UK) nearly, they are relatively cheap and may be worth the flight over to pick up several.