You can use it offline also. Basically works as you send a transaction on your offline computer, transfer the data of the transfer on your online computer via usb stick. You don't ever have your wallet online.
Ok so I do not have to be online after plugging in the usb in order to open the wallet and then send coins?
That is giving me a much better feeling, thought I had to be online to send.
Thank you
Although I know it is possible to receive coins while being offline, I thought you had to be online to send coins? Doesn't initiating a transaction require broadcasting it to the network?
You do broadcast it, you then take the data from your usb, and upload it to the online wallet.
https://bitcoinarmory.com/about/using-our-wallet/